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为探讨现代大型企业的劳动卫生现状，对在“八五”期间新投产的某中外合资露天矿选煤厂进行了现场劳动卫生学调查和测试。结果表明：该厂进口的成套生产设备机械化程度很高，但无任何防护措施，造成作业环境严重污染。煤尘浓度之高不能排除产生爆炸的可能~［１］。本次选５５个测尘点，测得２２７个样品。平均煤尘浓度为３５９．０ｍｇ／ｍ~３，测尘点超标达９８．０％。建议厂方应采取行之有效的防护措施。
In order to explore the status quo of labor hygiene in modern large-scale enterprises, on-site labor hygiene investigations and tests were conducted on a Chinese-foreign joint venture open pit coal preparation plant newly put into operation during the Eighth Five-year Plan period. The results showed that: The factory imported complete sets of production equipment, a high degree of mechanization, but without any protective measures, resulting in serious pollution of the operating environment. The high concentration of coal dust can not rule out the possibility of an explosion ~ [1]. The selected 55 dust spots, measured 227 samples. The average dust concentration was 359.0mg / m ~ 3, the dust-measuring point exceeded 98.0%. The proposed factory should take effective protective measures.