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Reading Room
Volume I : Move Towards Holistic Health

Section II : Aspects Of The Human Enviornment And Their Effects On The Lives Of The People - A Brief Survey Of The Issues Involved

In this Section, we survey the different aspects of the human environment, viz. land, water and atmosphere and see how they affect the lives of the people. Certain aspects of global pollution - acid rain, the ozone layer and nuclear fallour are also considered. The environment that we work in also has certain factors that affect our health and lives - these are also studied. Thus this section is essentially divided into four parts:

(a) Land (b) Water (c) Atmosphere and (d) work Environment.

A: LAND
The issues related to land that we choose to dwell on are changes in agricultural practices, dams, mines, housing and soil pollution.

CHANGES IN AGRICULTURAL PRACTICES
Changes in Agricultural Practices : The Green Revolution introduced the trends towards hybrid and high-yielding varieties of seeds. These replaced our traditional hardier strains of seeds. The newer varieties required large quantities of chemical fertilizers and pesticides and large volumese of water for irrigation. Even small and marginal farmers who do not have the resources - either in terms of capital for seeds and fertilisers or water for irrigation - are lured by the promises of phenomenal yields. without the requisite water, the strong chemical fertilizers and pesticides destroy the productivity of their already meagre lands. The small farmers lose not only the productivity of their lands, but also their pool of indigenous varieties of seeds, yet another factor to be dependent on external sources for !
With the advent of the market forces, the cropping patterns have changed too-instead of the traditional crops, more cash crops are being grown now. Nutritive diets available from traditional food crops grown earlier have been largely replaced by weaker diets based on non-traditional foods and imported grains.

Three Points about the Seeds issue (Excerpts)

  1. Food Divesity : Despite the 11 thousand food items found in large grocery stores (and the 7 thousand others test marketed each year) 95% of global human nutrition is derived from only 30 plants and eight plants give us three quarters of our caloric intake.
  2. Feeding at the same trough : All thirty plants originate in the Third World and the greatest divesity of gene raw material for future breeding remains there. The North may be grain-rich < but it gene-poor, and northern breeders depend upon imports of gene mateial in order to breed against ever mutating pests and diseases. Without regular infusions of this raw material all northern crops would gradually lose their viability.
  3. Genetic Erosion : With the spread of green revolution varieties, farmers eat the old seed and sow the new. Ten thousand years of plant genetic diversity can disappear in a bowl of porridge. Like building the roof with stones from the foundation, the new technology is destroying its own base. The rate of extinction is staggering. The genetic diversity of most cereal crops will have vanished from their original area by the end of this decade...

The Dungarpur district of Rajasthan, one of the worst drought affected districts in the country has lost most of its grain producing capacity. Many local people, who twenty to thirty years ago, used to be self sufficient in maize and wheat, now eat Australian wheat which they receive through the government drought relief programmes. The people state that this wheat is less nutitive than the local grains they used to produce earlier.
DAMS The rationale offered by the planners for large dams is to generate electricity and provide irrigation for the country’s agriculturists. heavy investment in the many major hydro-electric projects has not had the desired effects the thousands of mega watts of electric power that has been generated has mainly benefitted industries. The share of agriculture stood at a meagre 14.2% in 1978-79. About irrigation, the Planning commission itself has admitted in the Sixth Plan Document that the huge irrigated land investment made have yielded disappointingly low returns. While irrigated land should yield four to five tonnes of grain per hectare, the national average for such fields is only about 1.7 tonnes per hectare.
The Tawa dam in the Hoshangabad district in Madhya pradesh built at the total cost of Rs.300 crore had the following results:

Table 1 : Yields before and after Tawa Dam

Crop Average yields per acre (in quintals)

 

Before irrigation

After irrigation

     

1977-78

1978-79

1

Paddy

4.00

3.98

3.88

2.

Jowar

2.82

3.64

2.74

3.

Maize

4.82

4.07

4.01

4

Wheat

3.14

3.30

3.06

5

Gram

2.43

1.96

2.08

The average yields for all crops declined after irrigation. The Comptroller and Auditor General had the following to say in a report :
According to the scientific and technical opinion now available, because of the soil and weather condition, in the command area of the Tawa project, agricultural operations in both kharif and rabi seasons with the help of irrigation could not have been productrive but on the other hand, irrigation could even be harmful. The cultivators also resisted changing their habits and the cropping pattern they have been used to. Thus, it would appear that the project was ill-conceived and the benefits that were presumed would be available, could not have been realised. This would also indicate the need for a second look at the programme for development of the command area, so that possible further unnecessary and wasteful expenditure could be avoided.
Dr. D.R.Bhumla, former Agricultural Commissioner and Vice Chancellor of Haryana Agricultural univesity, says :

".... from the experience of major and medium irrigation works in India, it is evident that its benfits in arid areas, though spectacular for the first 10 to 20 years, gradually get reduced and a considerable portion of the land gets deteriorated because of waterlogging and salinity. In the humid areas, the benefits are doubtful from the beginning and in many cases negative. The programmes of major and medium irrigation works, as has been envisaged for the future in humid areas, in my opinion, would not lead only to disastrous consequences in degradation of soil and environment, but would also result in reduced agricultural production. It is time to halt the expansion of these programmes...
Not only do dams mean unnecessary and wasteful expenditure, out of the public exchequer, but they also have adverse multiplier effects. Most of the dams have resulted in the drastic reduction of surrounding forest cover. Forests are cleared for approach roads, offices, storage of construction material, for rehabilitation of the affected peoples or then simply cut down by contractors even in unaffected areas. The deforestation process sets up its own cycle of further perpetuation of ecological imbalance -- soil erosion, siltation, pollution, wild life destruction, cultural ethnocide - are the costs of thousand of mega watts of electricity and millions of hectares of irrigated land that dams promise.
An issue of foremost importance when dams are being discussed, is how they affect people. Millions of local inhabitants - mostly tribals - are rudely displaced to locate the dams. They lose their centuries ‘ old roots and ties. promises of rehabilitation by the State are lofty but often come to nothing. Many a time they are rehabilitated on degraded land in non contiguous areas - thus villages and families are broken up and scatterd. sometimes the displaced people are compensated with money. This fails to purchase the land, the value of which is soaring the beyond reach of the buyers. For instance, in the case of the Ukai dam in Gujarat, "Out of a total of 18500 affected families, only 3,500 could be resettled. Though Rs.7 crore, was paid as compensation, only Rs. 1 crore was deposited in banks, the rest being squandred or used for daily needs."
There are some otehr hazards of dams which are significant. dams have been known to cause earthquakes because the large quantities of water which impounds in them. Earthquake have been felt in the Koyna district. After the impounding in them. Earthquakes have been felt in the Koyna district. After the impounding of water in the Koyna dam of Maharashtra reservoir in 1962, a major quake in December 1967, took nearly 200 lives, injured 1500 people and rendered thousands homeless. Reports of tremors in idukki district of Kerala where the Idukki dam is situated on the Periyar river, have also been coming in.
Dams are known to burst too. The worst disaster was the Machu dam in Gujarat in 1979. Hundreds were killed and the town of Morvi along with several villages was destroyed by the flood waters.
What is the alternative to large dams? Development workes have shown that small to medium sized earthen dams built with local people’s participation and managed by them will be far more successful than the large capital intensive and centrally managed ‘temples’. Other ways of managing and conserving the surface water and ground water resources on local basis will have far reaching consequences
Small hydro electric plants can be very useful in augmenting the country’s available hydroelectric potential and in providing electricity in remove areas, particularly the hill districts. CentralElectricity Authority has estimated a potential of 25 billion kwh (Kilo watt hours) from small plants - 60% of our present installed capacity. china’s example of 87,000 small hydel works - almost a third of its total hydropower is something that India can learn from. thes micro hydel schemes would serve the nearby rural populations and not the large centralised urban-based industries.
MINES: are a crucial source of raw material for industry. Planners also justify mining as bringing jobs to backward areas. In fact, because of high degree of mechanisation, in the mining process, there are a limited number of low-skilled jobs available. Skilled labour is imported into these areas, leaving the local population unemployed.
Mining activity also leads to loss of agricultural land. It is not just the mines that eat away the agricultural alnd, roads, railways, townships, stock yards, processing operations - all encroach on land that earlier yielded food. Mining results in the removing of all vegetation and topsoil leaving leaving the land barren and devastated. disposal of the debris onto adjoining fields increases its infertility. Rain and wind further the process - they transport the waste mateial onto other cultivable land, reducing its productivity.
Mining on the hills is worse. the example of Nahi Kala area of Doon Valley, U.P. illustrates the horrors of limestone quarrying.
Limestone quarrying in doon Valley : since the last 26 years, sanctioned and formalised quarrying has been going on in 60 acrea of reserved forest areas. These forests had been a rich pocket of genetic wealth and means of sustenance of people of 31 surrounding villages. Quarrying started on a large scale when refugee miners came in from Pakistan after partition. The quarrying was formalised in 1962. Over the years, it affected the ecosystem in drastic ways. The lush green tree covered hills have been reduced to pathetic grey ash hillsides.
The forest cover and topsoil over large areas in the catchments was destroyed. The rejects and overburdens spilled over to areas on the hillslopes, not directly under the quarry lease. Both these factors affected the hydrological capacity of the hillslopes - the result was that the natural springs in the local catchment areas registered a decrease of 50% in their lean period discharges in the last 20 years. Large amounts of debtis has been dumped below the limestone belt. This has little water - infiltration capacity - so the catchment area in the Mussoorie Hills has reduced.
The debirs dumps added to the dangers of landslides on the already fragile hills worsened further by the use of explosives. The debris was washed down during the monsoons and increased the levels of the riverbeds by several feet accentuting the impact of floods. During the dry periods, the rivers dried up as the wate was displaced by the additional boulders and rocks. Water supply to the Doon Valley, especially to the urban settlements, has been getting progressively reduced.
Agriculture and food production have been adversely affected by the disturbance in the ecosystem. The flow of silt and debris has destroyed the irrigation channels in the villages below the quarries. Grazing lands - cattle population has decreased due to mining by as much as 40%. This has affected milk production in the area, as also the production of energy for farm operations and producion of animal dung. The last has affected soil fertility very badly. The overall impact is a collapse of food production system. Not only are the villages ain the vicinity of the quarries adversely affected - the overloaded streams and rivers with their slower flows have also affected agricultural activity on the plains leading to increased crop failure.

HOUSING

Housing : III maintained poorly ventilated and cramped residentialsurroundings are responsibel for the rapid spread of infectious diseases, particularly respirtory diseases and tuberculosis. Accidents associated with poor housing conditions, such as broken stairs, and ill paved yards are a leading cause of death, mainly among women, children and older age groups. Unsatisfactory home environment in crowded conditions is also responsible for psychiatric problems and mental problems. WHOs health hazards of the Human Environment (Geneva, 1972) lists several studies showing how the home environment affects health. some of the aspects apart from overcrowing and lack of sanitation whcih affect health and cause deaths are : fires due to faulty house wiring, electrical appliances and heating equipment. poisoning due to consumer products consisting of toxic chemicals, e.g. laundering and cleaning products, detergents, cosmetics, paints, pesticides etc.
The following table shows that even basic facilities like piped water supply, toilets and bathrooms are the privileges of a minority.

Table 2 : Condition of Structure and Facilities available to Households in Urban & Rural India

  Urban Rural All India
1 Households in 1971 census (in million) 19.12 77.94 76.06
2. percentage living in houses:      
a Excellent 18.3 6.6 8.9
b Fairly good 63.3 66.0 65.6
c bad & Dilapidated 18.4 27.4 23.6
3 Age of houses in years:      
a 0-5 31.3 15.9 18.9
b 5-10 10.0 14.6 13.7
c 10-20 46.8 23.3 22.1
d 20-40 21.9 21.2 21.3
e 40 & above 20.0 23.0 24.0
4 percentage of houses having:      
a I. Piped water inside 26.6 0.4 3.6
  ii. Piped water outside 30.6 2.2 7.8
b Electricity 27.9 1.0 6.3
c Bath 33.1 7.9 1.29
d I. Toilet of any type 34.0 3.8 13.7
  ii. Flush Toilet 12.4 0.1 2.5
Source : Goi Ministry of Planning, Statistical Abstract India - 1975 (New Delhi : central statistical Organization, 1976).

Quoted in Health Status of the Indian people FRCH (1987, Bombay), p. 196.

A report on housing financed by RBI (Reserve Bank of India) in 1978 estimated tghat 5.59 million houses in the rural areas and 1.53 million houses in the urban areas need to be built every year for the next twenty years. This would help to eliminate the backlong, meet fresh demand and replace dilapidated structures.
The urban housing shortage has led to mushrooming of slum and pavement dwellings. The growth in the slum population in the recent years has been a result of large scale migration from the rural areas. The rural people, deprived of ways of earning a livelihood and because of lack of sustainable agriculture, flock to the urban, industrial centres, as a means of sustaining themselves and their families.
About 82% of Bombay’s population lives in one room abodes, including slums. In calcutta, slums house 40% of thge metropolitan population. The figure for Madras is 30%. In Delhi, the slum population in 1977, was 25% __ in a span of 4 years in 1981, the figure rose to 53%.
Resettlement efforts have hardly given the results that were hoped for. The main reason for this is that the slum and pavement dwellers have not been part of the planning process that sought to resettle them. Society for Promotion of Area Resources Centre (SPARC) a voluntary organisation based in Bombay has been working with pavement dwelles- mainly women in a unique training and self education process. The process seeks to empower women to intervene actively in the process of securing their shelter.
Rural housing also faces many problems as mentioned in Section I, with the drfastic reduction in biomass, rural people face a shortage of building materials like thatch, timber etc. Some of the Stae Governments have also enacted laws that prevent people from cutting even their own trees for timber for buildings, without prior permission of the social administration. As poor people lose control of their traditional building resources, they tend to turn to urban building mateials - like brick, and cement, which apart from being expensive, (even for urban populations) are not ecologically ppropriate, being energy intensive and requiring mining operations. One conseqauence of imitating brick cement architecture is that the value of mud and mud houses which is the raw material for the majority of rural houses - list lost.

SOIL POLLUTION

Soil Pollution generally occurs because of:

  1. use of chemicals, such as fertilizers and pesticides in agriculture.
  2. dumping of land of waste mateials from idnsutries, including radioactive materials; and
  3. dumping on land of domestic refuse and solids resulting from the treatment of sewerage.

The soil is thus becoming increasingly polluted with chemicals including heavy metals and products of the petroleum indsutry which can reach the food chain, surface water or ground water and ultimately be ingested by man.
In most cities, there are open rubbish dumps that are easily accessible to flies, insects and animals. the common method of disposing refuse generated in homes, restaurants, markets and other public places, is to indiscriminately dump it on the adjoining land, or in some low-lying areas. Besides refuse, the nighsoil collected from unsewered areas, is also disposed off in the same ground either by trenching or compositing, giving rise to the danger of epidemics. Most towns have some organisation for collection, transportation and disposal of wastes, but these suffer from shortage of funds, inadequate transport faciliteis, bad management and lack of public cooperation. Sulabh International, an organisation in Patna, has been successful in showing how human waste of urban areas can be used to make biogas to generate electricity.
The problem of disposal of nuclear waste is a serious one in India, as elsewhere in the world. Every once in a while, there are newspaper reports of how children playhing on dumped waste heaps suffered serious burns from radioactive materials. not only do developing countries have to contend with their own waste, but also imports of toxic waste that the developed countries do not want on their own land.
Ruth Norris points out in Pills, Pesticides and profits : As the Unites states Government has acted to impose strict regulations on the domestic transport and disposal of hazardious wastes, American companies have begun to seek solutions to their waste control problems in less regulated developing countries. Several nations in West Africa. the Carribean and Latin Amerca have been approached, in some cases with lucrative offers of payments for recicing industrial wastes from the United states.
Most developing countries have neither government agencies, regulatory authority, nor technical expertise sufficient to prevent the occurrence of ‘Love canals’ - sites where unsuspecting residents are exposed to hazardous chemicals, improperly disposed of, such as the notorious one in upsate New York. Yet because no comprehensive United States or International Laws govern the export and disposal on foreign soil or toxic wastes, the developing world must once again weigh the payoff, whether it is economic development or technical assistance or simply cash, against the risk to health and environment posed by toxic wastes.

b. WATER

Water is another one of nature’s resources that is being affected adversely by man’s thoughtlessness.
Systems for optimum harvesting of rainwater have either not been designed or are not being used sufficiently. Tanks which usedd to be traditional India’s method of collection of rain water, have been neglected - much of the attention and resources have been spent on developing dams and the canal system of irrigation.
Another issue to be mentioned is the overexploitation of groundwater resources by boring of tubewells leading to the lowering of the water table. The Green revolution in the Indo-Gangetic plains drew heavily on the groundwater resources. In Maharashtra, too, where earlier coarse grains were cultivated with the available rain water, there has been a shift to the cultivation of water intensive sugarcane crop. The over exploitation the traditional agricultural practices, but to satisfy the market forces of generating cash crops. In the coastal areas, this has led to the diastrous condition of development of salinity. In parts of coastal Saurashtra for example, water intensive vegetables and sweet lime begun to be cultivated in 1950s. By 1970, sea water had intruded into the area, making the ground water in Maharashtra has increased the number of problem villages with no source of drinking water from 17,000 in 1980 to 23,000 in 1983.
Pollution of ground water sources is a serious matter too. Textile printing and dyeing industries, tanneries and coir processing industries are some of the industries that discharge chemical effluents and contaminate the ground water. Certain aras around Jodhpur, where many small scale textile dyeing units are situated, were found to have various forms of cancer among other diseases. Cattle, wildlife and crops were also found to be affected.
"Pollution of water - surface or ground - causes several health problems, most of the acute diseases affecting Indian are water - borne such as diarrheas, amoebic dysentery, cholera, typhoid, and infective hepatitis. diseases caused by water supply can be classified as follows:

  1. Waterborne diseases, spread by drinking water, contaminated by faces or by using contaminated water for personal hygiene or for washing food, includde all the above mentioned diseases.
  2. Water washed diseases, spread by poor quality of water, used for personal hygiene, include skin diseases, such as scabies and leprosy and eye diseases such as trachoma and conjunctivitis.
  3. Water - insect - related diseases, spread by insects (carries or vectors) that breed in water or breed near it, include malaria and yellow fever (mosquito), river blindness (blckfly), and sleeping sickness (tse-tse fly).
  4. Water based diseases, spread by parasites living in water, include schistosomiasis (bitharzia) transmitted by snails and guinea worm transmitted by microscopic waterflies; and
  5. Diseases from polluted water (or food) supply include hook-worm, roundworm, and whipworm.

it is estimated that 73 million work days are lost every year in India, due to water related diseases.
India is rich in rivers - surface flow represents 97% of the available water in India. But rather than being a boon, these rivers are proving to be quite a disaster in their pollution effects. Yamuna whose course is 48 kms, through Delhi picks up nearly 200 million litres of untreated sewage and 20 million lites of industrial effluents including about 1/2 million litres of DDT wastes. The sewage treatment plants are capable of treating only half of Delhi’s wastes. Water samples from the Yamuna taken near Agra are 20 times more polluted than those taken when the river enters Delhi. The section of the river from the point of Najafgarh drain upto Okhla show that the water ius not even fit for irrigation!

The FRCH report tells the following about water pollution in Bombay:
"A study by the Institute of Sciences, Bombay in 1980 revealed that the Kalu river, flowing through the industrial suburbs of Ambernath, Ulhasnagar and Kalyan in north east Bombay and emptying into the Thane creek, had mercury concentrations far above the permissible levels. Mercury poisoning from eating fish that had accumulated methyl mercury was responsible for the death and maiming of almost 300 persons at Minamat and Niigata in japan in 1953. Mercury enters the good chain through contaminated fish or cattle that graze on plants in shallow water. The study investigated in a 10 km stretch between Ambivali and Titwala, receiving toxic wastes from a rayons factory, a paper mill, a dye factory and a chemical plant. It found mercury levels between 1.6 and 20 ppm (parts per million) when permissible levels as per WHO standards for human consumption is 0.5 ppm. Also blood samples of villages near Ambivali, revealed levels ranging from between 14 ppm and 55 ppm when the normal is 1.5 ppm. The consequence has been a higher mortality; also most affected villagers had an impaired Central nervous system, maiming them for life. More recently, Maharashtra Government set up the A.K. Ganguly committee (Septembe 1986) to study the pollution levels in the Bhatsai river, one of Bombay’s main sources of potable water. The report submitted on February 4, 1987, confirms the fact that industries located within the river’s catchment area are discharging toxic effluents like hydrochloric acid, caustic soda, carbon tetrachloride, benzene, tolvene, cadmium, chromium, nickel etc. into the river, and that the filtration plant is not designed to remove these contaminatns nor is there any foolproof method to deal with them. The committee recommended relocation of the polluting industries. however relocation without stringent pollution control and environmental planning is no solution. In fact, when industry is located in so-called backward areas there is a tendency on the part of the pollution control authorities to relax implementation of stadnards specifying the levels of emission or discharge of pollutants and an inclination on the part of industry not to invest adequately on pollution control equipment.

TABLE 3 : SELECTED CHEMICALS & ASSOCIATED HEALTH HAZARDS.

  use HAZARD
Acrylonitrile Acrylic fibres/synthetic rubber plastics highly toxic / carcinogentic / teratognic.
Arsenic Pesticides / Unanic medicines / glass Toxic / dermatitis / muscular paralysis / damage to liver & kidney/ possibly carcinogenic & teratogenic.
Benzene Octane number of gasoline/manufacture of many chemicals Leumekia/chromosomal damage in exposed workes/ behavioural changes.
Beryllium Aerospace industry / ceramic parts / household appliances Fatal lung disease / heart & lung toxicity.
Cadmium Electroplating / plastics / pigments/ supenphosphate fertilisers. Kidney damage / emphysema / possibly carcinogenic, teratogenic & mutagenic.
Chlorinated organics (DDT, BHC, etc.) Pesticides / Fumigeint Depression of central nervous system / possibly carcinogenic.
Chromates Tanning / paints / pigments / corrosion inhibition / fungicides Skin ulcers / kidney inflammation / possibly carcinogenic / toxic fish.
Lead Pipes storage batteries / paints / printing / plastics / gasoline additive Intoxicant / neurotoxin / affects blood system.
manganese Mining / welding / dry cell battery / ferromanganese nerous damage / damage to repoductive system.
mercury Chloralkali cells / fungicides / Pharmaceuticals. nervous damage / kidney damage.
Polychlorobiphenyls Transformers / insulation of electricity. Possibly carcinogenic / nerve skin and liver damage.
Sulphur dioxide Sugar / bleeding agent / pollution from coalbased power stations. Irritation to eyes and respirtory system / damage to plants and monuments.
Urea Fertilizer Bronchial problems / kidney damage.
Vinyl chloride Plastics / organic compounds synthesis. Systematically toxic / carcinogenic.

Organic and inorganic chemical industries generate both liquid and sold wastes that are treated very inadeauately before disposal Generally the industry neutralizes the toxic waste water from the plants with time and the neutralized liquid effluents, whcih are still hjighly toxic, are discharged into rives and ponds. The sludge and other solid and semi-solid wastes are disposed off on fallow public land which pollutes both ground and surface waters. Table 3 shows the health hazards associates with selected toxic chemicals that need to be straingently regulated.

C. ATMOSPHERE

This Section deals with pollution of the atmosphere. Air pollution, noise pollution and pollution of the atmosphere due to tension, depression etc. are discussed. Pollution due to acid rain, the ozone layer and nuclear fallout are also mentioned.

AIR POLLUTION

Air pollution : The quality of the air that we breathe in is affected by smoke from domestic cooking fuels, thermal power stations, industries, vehicles, and mining activity. Domestic pollution in the third world countries from cooking fuels has been found to be the world’s worst air pollutant. Rural women in Gujarat are said to inhale 40 times the volume of suspended particulates considered safe by WHO. In barely three hours, they inhale the amount of carcinogenic benzo (a) pyrene that equals 20 packs of cigaretts. The problem is made worse in the monsoon and winterm when all the outlets in the house are closed and the smoke stays for longer periods within. Studies in Nepal, in higher altitudes, have shown a strong association of domestic smoke with chronic bronchitis.
A distressingly high incidence of acute respiratory infection (ARI) was found and was the most important cause of mortality and morbidity among infants below one year of age. Anemic women with low haemoglobin levels are affected very badly by the carbonmonixdfe emitted by burning fuels during cooking - dizziness, headaches, nauses are common sympotoms following even moderate exposure to carbonmonoxide. During pregnancy, which further lowers their reserves of haemoglobin, they become more sensitive to carbonmonoxide. The exposure can also affect the unborn child leading to reduced birth weight and increased perinatal death rates.
Thermal Power stations spew out pollutants, fly ash, soot and sulphurdioxide, despite the fact that the government has set limits to pollution levels. Out of the 48 thermal stations, surveyed in 1984, 31 had no pollution control measures and only 6 had their pollution control equipment functioning properly. The Badarpur and Indraprastha thermal power stations are the biggest air polluters in New Delhi. Thick black amog from the IP station’s chimney’s coats the surroundings with a layer of soot. tuberculosis incidence among the workerfs of the IP power station has been found to be twice the normal levls.
Industries like fertilizer factories and textile mills pour out noxious gases, particulates and cotton dust. "A detailed study of 4000 people conducted by KEM Hospital and the Air Pollution prevention Cell of the Bombay Municipal corporation in 1977-78 compared the health of residents in a clean western suburb of Bombay like Khar with that of residents of the mill area of Lalbaug and the Chembur area with its concentration of petrochemical plants. the residents of the congested industrial areas were found to be suffering from a much higher incidence of diseases like chronic bronchitis. TB, skin allergy, anaemia and irritation of the eyes. The absentee rate of workes was much higher particularly in Lalbaug’s textile mills and there was 10 to 16 percent incidence of byssinosis among the mill labourers. There was also a rise in deaths due to cancer in Lalbaug - twice as many as in Chembur or Khar.
Vehicles exhaust proved to be a major health hazard. Delhi is the worst polluted city as far as vehicle exhausts are concerned - 400 tonnes of pollutants are vomitted everday by 500,000 vehicles. This is 34 per cent of the smoke and dust emitted in the city. Over the last decade, Delhi’s pollution levels have risen by 75 per cent.
A lethal contaminant in the atmosphere is lead - no less than 400 kg is released in Delhi every day. Traffic police and road and construction workers are particularly vulnerable to it. samples from leaves on certain roads show a lead concentration of upto 5 ppm. Lead is an accumulative nerve toxin, which can cause irreversible damage like mental retardation and other extremely debilitating, but hard to measure effects. Children absorb it five times faster than adults.
Mines throw up much dust - open cast coal mines produce huge clouds of dust following blasting operations, the Bhatti mines just outdie Delhi add to the pall that hangs over Delhi. (See Table 4: Selected Atmosphere Pollutants).

ACID RAIN, OZONE LAYER & NUCLEAR FALLOUT
Related to air pollution, but coming more into the purview of atmospheric pollution are the issues of acid rain, the ozone layer and nuclear fallout. These area not local issues, but rather are global concerns.
The nitrogen oxides and sulphur oxide which are spewed out into the air by industries, vehicles and thermal power stations are transformed into nitric acid and sulphuric acid and get washed down by rain. This falls as deadly showers and destroy the natural life in the forests and lakes. Acidity kills off fish, bacteria and algae, and the acquatic ecosywtems collapses into sterility leaving a crystal clear but ultimately dead lake . Acidification fo the soil changes its biology and chemistry " Acidified soil can absorb cadmium more easily. Swedish cultivatged plants with high cadmium levels pose a serious threat to human beings and animals.
Unfortunately acid rain does not remain a local problem. For instance, the polluted air over London was varried by the winds to other countries, some even thousands of miles away and English pollution descended on sweden as acid rain.
Another problem of intenational significance is the destruction of the ozone layer, around the earth. This is our shield against solar radiation. Gases (chlorofluorocarbons or CFCs) used in spray cans, fluids in refrigerators and many of the packaging material of processed foods destroy the ozone layer. we aren now putting these gases into the atmosphere 6 times faster than nature can remove them. This descrution of the ozone layer will result in : Increased skin cancer, cataracts and other diseases; the blighting of food crops and harming of animals and the upsetting of the worlds climate and life support system.
Nuclear Fallout : Indirect or residual radiation is what we refer to as fallout. Whereas direct radiation lasts a few seconds, at most fallour can be lethal for hours, days or even yeas. The particles and waves given off in an atomic explosion cause radiation disease. They enter the human body like X rays, penetrating cell walls and damaging or destroying tissues. A nuclear explosion gives off both direct and indirect radiation. In the first few seconda the bomb produces direct radiation, which kills anyone close to it by destroying brain and nerve tissue.
Fallout is produced when the radiation from a nuclear explosion irradiates the material pulverized by the bomb’s blast. This debris is drfawn up into the stem of the mushroom cloud. the heavier material falls to earth near the blast site. smaller, dustlike particles are carried high into the air and picked up by prevailing winds which may take them hundreds of miles. When fallour drops to earth, its radiation has the same effect as direct radiation. It damages cells and causes sickness and death. Since radioactivity is invisible, tasteless and odorless, people hundreds of miles from an explosion may not realise thta the air they are breathing, the food they are eating, or the water they are drinking has been contaminated and can kill or injure them. Even where immediate illness does not occur, radiation can cause cancer and future genetic problems. Leukemia and other cancers crop up years after exposure. japanese people exposed to the bomb, for example, developed by the mid-1950s a leukemia death rate thirty times higher than the rest of Japan. Scientists have established a direct correlation between exposure to nuclear radiation and the incidence of cancer of the thyroid, breast, lung and salivary glands. A US Government study estimated that cancer deaths in the millions could be expected during the forty yeas following a large nuclear attack, even if that attack avoided targets in population centres, the same study estimated that, in addition to cancer, a large nuclear exchange would cause up to six million natural abortions. It would also cause as many as thirty six million "genetic effects" - for example, mutations resulting in deformed babies and increased genetic diseases - throughout the world.
Fallout comes not only from nuclear war explosions, but also from the testing of nuclear weapons all over the world. Not only do we face this insurmountable problem of a possible nuclear war holocaust, but also the effects of nuclear power plants. Fresh in everyone’s mind is the chernobyl disaster. Otehr such accidents are real part of this dangerous technology. Safety systems are not safe. Human error cannot be controlled. Ageing nuclear plants show signs of deterioration.

TABLE 4

POLLUTANT PRINCIPAL HUMAN SOURCES
CARBON DIOXIDE Fuel combustion for heating, transport, energy production.
CARBON DIOXIDE Incomplete fueld combustion (as in motor vehicles).
SULPHUR DIOXIDE Burning of sulpher - containing fuels like coal and oil.
SUSPENDED PARTICULATE MATTER Smoke from domestic, industrial and vehicular sources.
OXIDES OF NITROGEN Fuel combustion in motor vehicles and furnaces. forest fires.
VOLATILE HYDROCARBONS Partials combustion of carbonaceous fueld, industrial processes, disposal of solid wastes.
OXIDANTS AND OZONE Emissions from motor vehicles. Photochemical reactions of nitrogen oxides and reactive hydrocarbons.
SELECTED ATMOSPHERE POLLUTANTS
EFFECTS REMARKS
No direct effect on people. Over time, may lead to increase in earth’s temperature Normal constituent of atmosphere. essential to plant life.
Deprives tissues of oxygen with cardio respiraory diseases more sensitive. Construction of natural sources small. Smoking more significant for humans than exposure to traffic.
Combined with smoke, increase risk and effects respiratory diseases. Causes suffocation, irriration of throat and eyes. Combines with atmospheric water vapour to produce acid rain. Reduce crop yields. Leads to acidification of lakes and soils. corrodes buildings.  
Possible toxic effects depend on specific composition. Aggravates effects of sulphur dioxide. Reduces sunlight and visibility. Incrases corrosion. Chemically, a most diverse group of substances. Natural sources include dust-storms , volcanic eruptions and sea-spray.
Possible increase in acute respiratory infections and bronchitis morbidity in children. Produces brown haze in city air. Causes corrosion. Nitrogen oxide and nitrogen dioxide are the two components.
React with other pollutants to produce eye irritants (acrolein, aldehydes). Ethylene is harmful to plaints. Aerosol particles reduce visibility. May produce unpleasnat odours.  
Cause eye irritation and impaired pulmonary function in diseased persons. Corrode materials and reduce visibility. Ozone is one of the most damaging pollutants for plants. Mainly derivative : products of atmospheric reactions between other pollutants. Ozone is a natural and essential constituent of the upper atmosphere.

And nuclear waste from power plants cannot be safely disposed of. See the box for dangers of dumping it in seas and rivers.
We must study the structures where lethal pollutants can be hidden and isolated for long periods - even up to 500,000 years and not so easily trust the present wholly inadequate nuclear waste disposal practices:
"The present strategy of nuclear waste disposal is ‘concentration and confinement (Morgan 1976b). The Atomic Energy Commission (US) report in 1972 stipulates that the high level radioactive waste be solidified and transferred to a respiratory owned by the government (Karam 1976). A repository is supposed to be completely isolated from the biosphere so that the pollutants cannot percolate into any food chain. Further it is supposed to be permanent storage facility, so that once the pollutants are deposited there, no more surveillance should be needed. According to one estimate soon about 1000 acres of land per year would be needed to bury radioactive pollutants (Karam 1976).
It was proposed in 1971 by the Committee on Atomic Energy (US) that the radioactive waste be buried in salt mines near Lyon, Kansas. The Atomic Energy Commission was to buy 200 acres of exhausted salt mines plus 800 acres of adjacent salt formations. Thus the scale of the problem is utterly underestimated. AEC regarded salt to be the most economical encasement for nuclear waste. It believed that as the tempertaure rises due to radioactivity, the sale would melt and fill the existing and prospective cracks in the surrounding rocks, providing good isolation. But the U.S. Geological Survey has criticised these cconclusions (Hicks 1975). They have argued that all the boreholes in that area cannot be satisfactorily plugged, that subsurface water has been leaking, into the salt formations in that area, that the AEC model considered rock sections to be compounded of sand and shale as against laminated salt and shale which is the structure, that the compound effect of subsisdence, heat flow, thermal expansion etc. could break the seal of rock above, facilitating the surface and subsurface water to leak (Hicks 1975).
Activists from several States in India have taken the lead in efforts to make India non-nuclear. Kakrapur, in Sough Gujarat, is the site of two 235 MW reactors under construction. The construction began in 1980 and at present the authorities expect the reactors to become critical sometime in 1991. A local agitation of somewhat sporadic character has been going on since 1985 opposing the construction of the reactors. Similar movements in Karnataka against Kaiga and in Tamil Nadu, Kerala and UP have gained ground especially during the period 1986-89.
Noise Pollution : The different effects of high level noise, have been studied. Auditory fatigue, impairment of hearing acuity, and deafness are known to be some specific auditory responses.
Non specific physiological responses include the effect on the cardiovascular and respiratory systems. Changes in the galvanic skin responses and blood and other body fluids, e.g. hypokalaemia (abnormally low potassium levels in the blood which may lead to neuromuscular and renal disorders and electro-cardiographic abnormalities) hypo and hyper-glycaemia have also been reported.
Noise effects sleep and work performances, causes annoyance, mental tension and irritation leading to emotional disturbances at home and at work. See the Box on noise pollution and Table 5.

ATMOSPHERIC POLLUTION DUE TO PSYCHOLOGICAL FACTORS

While discussing pollution of the atmosphere, an important, but not often discussed point, in our opinion, is the tnagible pollution caused due to mental tensions of persons. Many of us often have had the experience of feeling uneasy and tense in the presence of certain persons. We have not known how to rationally and logically explain this feeling. Further interaction with those persons reveals their tensions, depression, anxieties, unhappiness. Even without verbal expression, their feelings are projected into the atmosphere. The ‘vibrations’ that emanate from these persons indirectly increase the tension of those with whom they come in contact.

Table 5 : Sound Levels of some noise sources found in different environments.

Overall levels in dB2

Indutrial and military

Community (outdoor)

Home (indoor)

140

painfully loud Carrier deck jet

operation (140 dB)

Oxygen torch (126dB)

   

130

  Pneumatic clipper (122 dB)    

120

Uncomfortably loud Pavement breaker (115 dB)

Textile loom (112 dB)

Cut off saw (106 dB)

  Discotheque (120 dB)

110

  Farm tractor (103 dB)

Newspaper press (101 dB)

jet aircraft flyover at

300 m (110 dB)

Power mower (103 dB)

 

100

Very loud Bench Lathe (95 dB)

Milling machine (90 dB)

Excavation rock drill

at 15 m (100 dB)

Motorcycle at 8 m (96 dB)

Food blender (90 dB)

90

  Bed press 86 dB)

Key-punch machine (82 dB)

Heavy truck at 15 m (93dB)

Train whistle at 150m (90dB)

Alarm clock (85 dB)

Garbage disposal (83dB)

Clothes washer (82dB)

80

Moderately loud   Passenger car 100 km/h

at 15 m (76 DB)

Church bells at 50m (70dB)

Light traffic at 30m (66dB)

Living room music (78dB)

Dishwater (76 dB)

TV-Audio (73 dB)

Vacuum Cleaner (72 dB)

70

      Toilet flush (65 dB)

Cnversation (60 dB)

50

Quiet      

40

       

30

Very quiet      

20

       

10

Just audible      

0

Threshold of hearing      
Source : 1. After Cohen. A. Sound and Vibration National Library of Medicine (Bethesda, MD. 1969), Quoted in Health Hazards of Human Environment, WHO (Geneva, 1972)

2. Reference sound pressure level : 0.0002 microbar.

Nuclear Seas
There are approximately 900 nuclear reactors in the world, with 374 in operation on land and over 500 at sea, powering USA, UK, French, Soviet, Chinese, and now Indian vessels. Reactors at sea operate without any regulations covering radioactive discharges or accident reporting. They are a continuous moving source of radioactive pollution, and frequently break international law by travelling submerged within territorial waters of other countries.
The 500+ reactors at sea frequently operate in hazardous conditions and have regularly run around, sunk, suffered fires, floods, mechanical, breakdowns, and have collided with fishing boats, tankers and other warships. In the past ten years there have been over 200 accidents with Soviet subs alone, including the sinking of 3 subs complete with reactors and warheads. Two US subs have also sunk and between 1965 and 1985, the US navy has had 628 ‘incidents’ and two ‘accidents’ involving nuclear weapons. It is impossible to calculate the risk of a major nuclear accident at sea because of the secrecy surrounding their operation and records.
Ireland is in the frontline of much nuclear activity with the Irish sea containing upto 15% of the US nuclear arsenal at any time and Warsaw Pact vessels on surveillance at either end. Both NATO and Warsaw Pact vessels nuclear submarines travel underwater within Ireland’s three mile limit, staying within the warm coastal waters to avoid infrared detection by satellite. Nuclea subs can also carry up to 160 nuclear warheads. Thus these vessels not only pose a threat in themselves but they are also a target in the event of war and have the capacity to initiate a nuclear war.
Since the oceans are an essential part of life and provide protein for much the world’s population, it is imperative that the non-nuclear communities of the world unite against the continuation of the unacceptable contamination and threat to the seas. Earthwatch, Irish CND and Greenpeace - UK have plans to set up the campaign to denuclearise the Irish Sea, as part of the recently launched Greenpeace International Campaign to Disarm the Seas.
(note : This ought to be read in conjunction with newsreports about India’s acquisition on lease of a Soviet nuclear powered submarine which would give the Indian navy "deep strike" capability. Those newsreports should be read together with other newsreports about India’s sudden ‘desire’ to buy two nuclear power plants from the Russians and giving the go-bye to the much-flaunted self reliance in the nuclear field.
Source : ANUMUKTI Vol. 1 No.4. February 1988, p. 6 (Vedchi, Gujarat)
Scientists have discovered that all living organisms have their own fields of energy or auras. The energy fields of tense, angry persons are negative, and they affect the environment negatively.

NOISE POLLUTION

A survey carried out in 1970 in parts of Delhi, by the National Physical Laboratory revealed that noise levels in the city were far above the maximum limits suggested by experts. As against 45 decibels (dB) recommended by Swiss experts, peak levels in excess of 100 dB were recorded in parts of Delhi: Daryagunj was found to have night time levels of 80 dB and the area around the All India Institute of Medical Sciences had 59 dB. A noise level study conducted by SOCLEEN in crowded localities of Bombay in 1980, found noise levels upto 97 dB during the annual Ganpati festival. Loudspeakers are commonly used at festivals and ceremonies. Factories, automobiles, trains and aeroplanes, religious and social ceremonies are also sources of noise pollution in India. Prolonged exposure to noise levels above 90 dB can cause permanent deafness. Factory workers have shown neurological, digestive and metabolic disordes under such conditions.
Source : FRCH Report, 1987. p.204.

Some persons on the other hand, who are at peace, with themselves and derive a joy from living have around them a positive aura. Their energy fields are strong and positive and they give out peaceful or healing vibes.
With our society becoming more and more consumerist, grasping and competitive, peoples’ tensions are at higher levels than ever before. This is rapidly increasing the atmospheric pollution due to "bad vibes". Tensions escalate until finally there is an outbreak of violence. What seems to be required is :

  1. That we ned to rethink our values - do we need to fall into the trap of the competitive rat race with its meaningless tensions and emptiness? and emptiness? and
  2. To cope with the existing tensions around us by practising stress management, following techniques and methods that will help us to balance ourselves and find our centre of quiet deep within.

(D) WORK, WORK ENVIRONMENT AND HEALTH CHANGES

This section explores the health problems connected with certain types of work, the environment in which the work is done and the working conditions. The major types of environmental stress for the worker are : chemical agents, physical agents and conditions, biological agents and conditions and psychological factors.
These may act either singly or in combination. The environmental and human factors may interact to prodcue accidents. Occupational disease and injuries result from specific exposures at work. In addition, work exposures may aggravate certain illness or be a factor of varying importance in causing diseases of multiple etiology. The point to be noted is that industry - the decision makers and management - does not accept responsibility for the occupational hazards that affect the workers. Minimum safety standards are seldom adhered to, personnel policies seldom contain provisions for leave for occupation induced illnesses. Laws providing for compensation in cases of mishaps and accidents are seldom complied with. Just as iatrogenesis is a condition of sickness induced by the healer or doctor, ‘ergogenesis’ is a condition of ill-health induced by the work! See Table 6 for Occupation Factors affecting Health of Unorganized Women and Recommendations. This Table summarises the major occupational health problems of women workers in the informal sector and the recommendations thereof suggested in the report of the National Commission of Self-Employed Women and in the Informal Sector (1988).

CHEMICAL AGENTS
Dusts from work places - mines, quarries, fertilizer plants, textile plants and other industries - can cause respiratory diseases - allergy, lung cancer, tuberculosis, etc. Poisoning can occur after inhaling toxic dusts. Dermatoses and other skin problems can occur on repeated contact with skin irritants.
Silicosis is caused by breathing in free silica or silicon dioxide. This disease occurs or is found in people working in quartz mines, steel works and iron foundries, in ceramics and glass industries. Silicosis was first reported in india from Kolar Gold Fields in 1947.

Slate Workers Of Mandsaur

"An ICMR study of 605 workers in the slate pencil factories of mandsaur in Madhya Pradesh pointed out that 80 percent of workers were below the age of 35 years, and very few worked or survived beyond 10 years. The prevalence was highest among the cutters and increased with the duration of exposure. 52 percent of the workers had dyspnea and 51 per cent showed positive radiological evidence of silicosis. In Mandsaur, Multanpur and Pipalimandi villages, there was hardly a man over 40 years, and there was not a single house without a widow. An estimated 5000 workers are faced with early death as there is no effective treatment nor have preventive measures been undertaken by the industry, like dust control, and regular medical examination."
Source : Institute of Occupation Health. Health hazards Evaluation in Slate Pencil Manufacturing Industries at mandsaur (M.P.) (Ahmedabad 1981). Quoted in FRCH report 1987 p.205.

Asbestiosis is the result of working in asbestos mines and wherever asbestos or asbestos products are used, for instance, where asbestos-cement roofing and pipes are made, in the manufacture of fireproof material such as asbestos chothes or break linings for motor vehicles, when asbestos fibres deposited in the lungs cause pulmonary fibrosis leading to respiratory insufficiency and death, in more severe cases, it causes cancer of the lungs and the gastro intestinal tract called mesothelioma. Most of the asbestos used in India is imported - only about 20 per cent is mined in india. The big asbestos using units - there are about 20 of them - have links with multinationals.
"Conditions at india’s largest mine, the Birla-owned Hyderabad Asbestos Cement Products in Roro, Bihar, are truly primitive. Some 1,500 tribals are employed in the mines, where they have to crouch for hours in dingy underground tunnels. If such exposure hasn’t proved lethal, the fine dust particles are dumped in the open, exposing 50 tribal villages in the neighbourhood to contamination. needless to say tje tribals of this area, known as Kolhan- whcih according to a government statement is supposed to be fighting for ‘ independence ‘ from Bihar - aren’t provided uniforms, as employers are compelled to do in other countries. A joint study by the International Labour Organisation (ILO) and assistant director general of mines in 1978, on these workers’ conditions has itself been gathering dust.

Pneumoconiosis, or disease of the ‘black lung’ is caused by coal dust in the mines. With mechanisation, the size of the dust that is produced is much smaller than the produced by hand dirven tools - the smaller dust particles are most harmful.
The conditions in the coal mines are pitiable. In Jhagarakhand (M.P.) new sections of mines are opened up without bothering to ventilate them. Most exhaust fans do not work. Managers try to dupte mining inspectors when they come on their visits - fences are put up around these sections to give the impression that no work is in progress. Medical facilities are minimal.
Byssinosis : is caused by deposits of cotton fibres in the lungs. It generally affects those who have been working for more than 10 years. The disease is progressive and in time causes permanent breathlessness and shortens a victim’s life span. A varient of this disease, bagassosis, occurs when sugar mill workers inhale the dust from bagasse or cane waste. Bagasse, the fibre which remains after the sugarcane juice is extracted, is used for making board and paper. During the drying of the bagasse fibre, fungi grow over it. When the bagasse is shredded to make bales, the workers are exposed to clouds of the dangerous dust, which has been known to kill.
Byssinosis can be prevented by redesigning work places and by medical treatment. Dust can be controlled by replacing old machines with new, installing exhaust systems and providing respirators to workers.
The deadly dusts affect the women workers far more than the men. In addition, to the usual chest related diseases, women begin to suffer from gynaecological problems too. The example of women working in the tobacco processing industry can be mentioned here. In Nipani, maharashtra bout 4000 women are working in tobacco sheds. Apart from the chest diseases, the tobacco dust affects their menstrual cycles as well as the lactation in your mothers.

Chemical Agents : Manufacturing pesticides and insecticides pose serious hazards due to the frequent leaks of toxic chemicals and danger from accidents during storage and transport. The case of Union Carbide in Bhopal is a classic example where over 2,000 persons perished and many more have been affected for life.

Some startling facts about chemicals are given in the boxes below.

HAZAROUS PRODUCTS
  • For the past 40 years, nearly 10,000 chemicals have been synthesized, worldwide, every year. We know nothing about the toxicity of 80 per cent of the chemicals in use.
  • India uses nearly 100,000 tonnes of pesticides annually. At least 70 percent of this tonnage is contributed to by pesticides banned or severely restructed in Western nations.
  • A WHO study, which analysed food samples across India, found that 50 per cent were contaminated with pesticide residues, with 30 per cent exceeding permissible limites.
  • Pesticide use in India has multiplied 20 times between 1960 And 1980.
  • ILLS OF PESTICIDES

    . .. A survey by the Indian Institute of Management, Ahmedabad, of workers spraying pesticides and engaged in dusting operations in five Gujarat districts; revealed: "None of the labourers were provided with masks to prevent the inhalation of toxic chemicals. Goggles to protect the eyes were also not available. Only 50 per cent of the workers took the precaution of covering their nose and mouth with a cloth. Besides 20 per cent did not wash their hands after completing the operations, and of those who did, the percentage of workers not using soap was 64%, though washing with water alone is utterly inadequate."

    Source : CSE Citizens’ Reort 1984-85.p.246

    Apart from dramatic disasters like the Union Carbide accident at Bhopal, there are other commoner chemical related disease. Occupational dermatitis is an example. Workers in chemical plating factories and press workers are susceptible to this. It inflames the skin which becomes swollen and itchy. But workes suffering from this uncomfortable disease are not entitled to medical benefits and sick leave nor any compensation. under the Workmen’s Compensation Act, they must fend for themselves, and must return to work as soon as possible, or face being sacked!
    Table 3 on certain chemicals, their uses and their hazards shows the multiplicity of adverse effects of only a small selection of these chemicals.

    PHYSICAL AGENTS AND CONDITIONS:
    Physical Agents and Conditions : These include the effect of lighting, radiation, vibration, humidity, heat and cold, noise and abnormal air pressure. The nature of work like lifting heavy loads is also discussed in this section.
    Dim lights associated with high visual demands lead to eye strain and fatigue. The partial darkness of coal mines in India for eight hours each day over a long period of time result in acute and chronic effects - headaches, eye pain, lachrymation and congestion around the cornea, are some characteristic conditions found among coal miners. Glare, on the other hand, also leads to discomfort and visual fatigue. Increased annoyance levels are found among persons working in rooms with a bright glare.
    Ultraviolet radiation emitted during welding can damage the eyese and skin. Infra-red rays - foundry workers handling molten metals are exposed to these, can cause eye damage besides increasing body heat. Exposures to high levels of ionising radiation - as in nuclear thermal plants, nuclear reactors, heavy water complexes - can cause severe burns, blood dyscrasias, gastro intestinal symptoms, cataracts, cancer and gene mutations. The severest criticism of nuclear energy is it sirreversible radiation effects on all living organisms.
    Continued exposure to vibrations as in mines, quarries, foundries and machine inustry, cause the fine blood vessels of the fingers to become susceptible to spasms and also cause injuries to the joints of hands and elbows and shoulders. Working in environments with high temperatures results in apathy, lassitude and seleeplessness and adversely affects alertness and reaction times. psychomotor coordination is also affected. Exposure to low temperatures over long period of time on the other hand, lead to rheumatism and bronchopulmonary diseases besides causing chilblains, frostbite and erythrocyanosis (Coarsely mottled bluish red discolouration on the legs and thigs, especially of girls, thought to be a circulatory reaction to exposure to cold.)
    Noise is a pyschological and physical health hazard for the worker employed in boiler making, aircrafts, motor garage, blacksmithy, blasting rock drilling metal working trades and many others. Textile mills are some of the noisiest work places in the country.
    Workers who lift heavy loads as on the docks, railway stations and in many facotires are affected by disease of bones and joints, strangulated hernias and varicose veins.
    Some of the occupational accidents that are caused can be attributed to the physical conditions of work. For instance, the number of accidents that occur during wheat harvet time is because farm hands are working around the clock. The threshers receive the power only at night, and by then the workers are exhausted and their reflexes are not what they ought to be. The wodk is done by unskilled migrant workers, whose poverty compels them to work almost aroung the clock in certain seasons. The farmers too are anxious to finish threshing before the onset of the monsoon; usually they rent the machine by the hour, so time is of the essence. The workes try to bet their drowsiness at night by using intozicants; this compounds the problem.

    BIOLOGICAL AGENTS AND CONDITIONS
    Doctors, nurses, laboratory workers, tanners, vetgerinarians, zoo and circus attendants, agricultural and municipal woerks are the ones who get diseases from biolgical agents. The biological agents may be viruses, rickettsiae, bacteria and parasites. Some of these diseases are anthrax (from wool sorting and handling of infected hides), brucellosis (from contact with infected animals), tetanus (from infected wounds).

    PSYCHOSOCIAL FACTORS
    A high degree of mechanisation in the work, or working in isolation as with a computer, or on night shifts, produces psychosomatic problems. Mechanisation leads to repetitive work and thence to reduced job satisfaction. Night work and the change of working hours from one shift to another subject workers to certain stresses. Such stresses affect the nervous system, increasing the frequency of peptic ulcer and of nervous symptoms, like fatigue, nervousness, irritation and insomania.
    "Behavi