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冶金部于1980年6月2日至24日在沈阳召开了凿碎法岩石可钻性分级技术鉴定会,参加会议的共65个单位84名代表;天水风动工具研究所也应邀派出代表参加了这次会议。会上听取了东北工学院关于《国内外可钻性分级研究情况及观点》、《岩石可钻性分级研究情况》技术报告;听取了南芬露天
The Ministry of Metallurgical Affairs convened a technical appraisal meeting for the classification of rock drillability in Shenyang from June 2 to June 24, 1980. A total of 84 representatives of 65 units attended the conference. Tianshui Fengdongju Institute was also invited to send representatives This meeting. At the meeting, he heard technical reports from Northeast Institute of Technology on “Study on Classification of Drillability at Home and Abroad” and “Study on Grading of Drillability of Rocks”