我矿是一个中型露天矿。随着开采工作逐渐向下延深,矿岩运输条件日益困难,然而,近两年来却出现了成本下降、利润上升的新局面。1981年磷矿销售利润为345.1万元,1982年矿石成本中增加维简费67.3万元(国家规定从1982年起,每吨石矿增提1元),增加福利基金与奖励基金开支26万元 Mine is a medium-sized open pit mine. With the mining work gradually deepening, the transportation conditions of ore and rock are increasingly difficult. However, in the past two years, a new situation of cost reduction and profit rise has emerged. In 1981, the sales revenue of phosphate rock was RMB3.4451 million and the maintenance cost of fracturing was increased by RMB673,000 in 1982 (the state stipulated that the per ton of quarry should be increased by RMB1 since 1982) and the expenses for welfare fund and incentive fund increased by 260,000 yuan