大连重型机械厂是家有六 十多年历史的老厂。由于设备 陈旧,劳动保护设施不全,1978 年以前,铸钢、铸铁车间的几 个主要扬尘点的粉尘浓度高达 200毫克/米3。粉尘浓度大,不少工人患了矽肺病,工厂每年要为矽肺病人花费13万元。粉尘危害严重地阻碍了生产的发展。 党的十一届三中全 Dalian Heavy Machinery Factory is home to more than 60 years old factory. Due to obsolete equipment and inadequate labor protection facilities, dust concentrations of up to 200 mg / m 3 were found in several major dust spots in the steel-making and cast-iron plants before 1978. Dust concentration, many workers suffering from silicosis, the factory every year to spend 130,000 yuan for patients with silicosis. Dust hazard seriously hindered the development of production. The third part of the Eleventh Central Committee