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1 冶金部于1979年12月24日至27日在杭州市召开了J-100型潜孔冲击器和钻头技术鉴定会议。参加会议的有26个单位64名代表。会议听取了长沙矿山研究院关于“J-100型潜孔冲击器和钻头设计、试制、试验总结”的报告,嘉兴冶金机械厂关于“J-100型潜孔冲击器和钻头试制工艺”的报告,闲林埠铁矿、建工总局第五工程局、桃冲铁矿、大吉山钨矿和云锡松树脚矿等关于“J-100型潜孔冲击器和钻
1 Metallurgical Department held a J-100 DTH Impact Drill and Drill Qualification Meeting in Hangzhou from December 24 to November 27, 1979. There were 64 representatives from 26 units participating in the conference. The meeting listened to the report of “Research on Design, Trial Production and Test of Model J-100 DTH Hammer and Drill,” a report by Jiaxing Metallurgical Machinery Factory on “Trial Production Process of J-100 DTH Hammer and Drill Bit” , Jining Lin iron ore, Construction Engineering Bureau Fifth Engineering Bureau, Tao Chong Iron Mine, Dajiashan Tungsten Mine and Yun Tin pine foot on the "J-100 DTH and drill