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上钢三厂铸造车间于1949年成立,1958年分成铸钢、铸铁两个车间。铸钢造型从1972年起“70砂”(石灰石砂)代替石英砂。本文对不同粉尘所致尘肺的情况进行比较。
The foundry of Shangsang No.3 Factory was established in 1949 and divided into two workshops of cast steel and cast iron in 1958. Casting steel modeling Since 1972, “70 sand” (limestone sand) instead of quartz sand. This article compares the dust and lung conditions caused by different dust.