湖北鄂钢螺丝山铁矿是1966年建设的小型露天矿山。在毛主席革命路线的指引下,在“工业学大庆”的群众运动中,经过几年的努力,采场基本上形成了从凿岩到矿车回车的“一条龙”机械化作业线,大大减轻了工人劳动强度,节省人力70多名,基本上避免了重大工伤事故的发生,生产效率显著提高。1974年生产铁矿石82400吨,比建矿初期提高3倍以上,每吨矿石成本由原来18.50元下降到8.70元。今年1～5月尽管雨多、停电多、困难多,采矿剥离仍超额完成了国家计划。该矿小螺丝山,为一凹陷露天采场。凿岩原来仅靠几台01-30型凿岩机打眼,效率低,爆 Hubei E steel screw Hill Iron Ore is a small open-pit mine built in 1966. Under the leadership of Chairman Mao’s revolutionary line, in the mass movement of Daqing in the industrial sciences, after several years of hard work, the stope basically formed a “one-stop” mechanized operation line from rock drilling to the carriage return. It has reduced the labor intensity of workers and saved more than 70 manpower, basically avoiding the occurrence of major work-related accidents and remarkably improving the production efficiency. In 1974, 82,400 tons of iron ore were produced, an increase of more than three times that of the initial stage of construction. The cost per ton of ore dropped from 18.50 yuan to 8.70 yuan. From January to May this year, despite more rain, more power outages and more difficulties, mining stripping still surpassed the completion of the state plan. The mine small screw Hill, a pit open pit. Drilling the original only rely on a few 01-30 drilling machine drilling, low efficiency, burst