在毛主席革命路线指引下,近几年来,我国小口径金刚石钻进发展很快,岩心钻探的落后面貌,正在逐步得到改变。钻头制造技术,金刚石钻进工艺水平取得了较大的进展,尤其是钻头制造技术达到了较高的水平。在上级领导的指示和关怀下,勘探技术研究所的广大工人、干部和技术人员,高举“鞍钢宪法”红旗,坚持“独立自主、自力更生”的革 Guided by Chairman Mao’s revolutionary line, in recent years, the development of small diameter diamonds in our country has been developing rapidly. The backwardness of core drilling is gradually being changed. Drill bit manufacturing technology, diamond drilling technology has made great progress, especially the bit manufacturing technology has reached a higher level. Under the direction and care of the leaders at the higher level, the vast numbers of workers, cadres and technicians of the Exploration Technology Institute hold high the “Red Flag of the Ansteel Constitution” and adhere to the principle of “independent and self-reliant” leather