山东黄台山石料厂爆破小组长刘发同志,是有名的爆破能手,在过去开山采石中,他为风钻组选择炮眼位置,曾负过重伤。最近他又试验把甲级导火线(即药捻子)改用乙级导火线;用黑土药代替丸子药和减少黄色炸药的比例数,都得到了或功。增产节约运动开展后,全厂采用了刘发同志的先进经验,把甲级药捻改用乙级药捻,每公尺可节省八百至一千元。同时刘发同志还采用每根捻加一个小黑 Comrade Liu Fa, head of the blasting team at the Huang Taishan Stone Works in Shandong Province, is a famous blasting expert. In the past quarrying, he chose the blasthole location for the blast crew and had serious injuries. Recently, he also tried to switch Class A fuse (ie, drug twig) to Class B fuse. The ratio of black clay to pills and the reduction of yellow explosives has been obtained. After the campaign to increase production and save energy, the whole factory adopted the advanced experience of Comrade Liu Fa and changed the Grade A drug twister to Class B medicine twister, saving eight hundred to one thousand yuan per meter. At the same time, Comrade Liu Fa also used each twist plus a black