我厂铸造车间,以前用风铲清理铸件,劳动强度大,噪声高,生产效率低,矽尘飞扬,实测工作场地空间矽尘浓度为 73.5毫克/米3,远远超过国家规定标准,严重影响工人身体健康。清铲工人决心采用水力清砂,改变这一落后状况。他们遵循毛主席关于“自力更生,艰苦奋斗,破除迷信,解放思想”的 I plant foundry, used to clean castings with wind shovels, labor-intensive, high noise, low production efficiency, silica dust, the measured spatial silica dust concentration of 73.5 mg / m3, far exceeding the national standards, seriously affecting Workers are in good health. Shovel workers determined to use hydraulic sand, to change the backward conditions. They follow Chairman Mao’s principle of “self-reliance, hard work, superstitiousness and emancipation of the mind.”