Chronic lung diseases such as pneumoconiosis were once very common among miners, which shortened life expectancy. In some mining countries, pneumoconiosis is still common; There are about 4,000 cases of black lung in the United States every year (about 1.5 million of them are former miners), while there are about 1 10,000 new cases in China every year.
Coal is the most important solid fuel and a combustible organic rock. It is formed by lush plants growing in a certain geological age, gradually accumulating into thick layers in a suitable geological environment, buried in the bottom of the water or sediments, and formed by natural coalification in a long geological age.
Among all geological periods in the world, Carboniferous, Permian, Jurassic and Tertiary strata produce the most coal, which is an important coal-forming era.
The carbon content of coal is generally 46 ~ 97%, which is brownish black with dull to metallic luster. According to the degree of coalification, coal can be divided into four categories: peat, lignite, bituminous coal and anthracite.
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Occupational health monitoring in coal mines;
According to Article 31 of the Regulations on Prevention and Control of Occupational Hazards in Coal Mine Workplaces? For workers exposed to occupational hazards, coal mining enterprises shall, in accordance with the relevant provisions of the state, organize workers to carry out occupational health examinations before, during and after taking up their posts, and inform them in writing of the examination results.
The expenses for occupational health examination shall be borne by coal mining enterprises. Occupational health examination shall be undertaken by medical and health institutions approved by the health administrative department of the people's government at or above the provincial level.
Article 32? Coal mining enterprises shall not arrange personnel who have not undergone occupational health examination before taking up their posts to engage in operations exposed to occupational hazards; Personnel with occupational taboos shall not be arranged to engage in operations that are taboo; Minor workers shall not be arranged to engage in operations that are exposed to occupational hazards, and female workers during pregnancy and lactation shall not be arranged to engage in operations that are harmful to themselves, the fetus and the baby.
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