HONG KONG (Reuters) - Chinese workers who are exposed to silica dust in mines, and pottery and gemstone factories suffer not only from respiratory illnesses, but are at higher risk of contracting heart and infectious diseases and cancer, researchers in China have found. Silica is a compound found in sand and rock. When rocks are drilled or broken, fine silica dust particles are produced that lodge deep in the lungs and can lead to scarring, severe respiratory problems and death. ...
Source: http://news.yahoo.com/china-study-finds-mine-workers-higher-risk-cancer-033745820--finance.html
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