我矿无底柱采矿和露天短距离运矿,过去都是人推车,劳动强度大,效率低。我矿机修工人,大搞技术革新,在学习安徽向山硫铁矿向-1型自行矿车的基础上(见马鞍山矿山研究院“矿山技术简报”1972年第2期,向-1型电动自行矿车及其配套使用一文——本刊注),于1973年 My mine pillarless mining and open pit short-distance transport, in the past are people carts, labor-intensive, low efficiency. I miner repair workers, engage in technological innovation, learning from Anhui Xiangshan pyrite to -1 type on their own cars (see Ma’anshan Institute of Mining, “Mines Technology Bulletin” No. 2 of 1972, to -1 type electric self Mine car and supporting the use of a text - Journal), in 1973