在毛主席革命路线指引下,为“开发矿业”,大打矿山之仗,提高矿山机械化水平,瑶岗仙钨矿和水口山矿务局在上级党委正确领导和长沙矿山研究院等兄弟单位大力协助下,勇敢战斗,不怕挫折,克服重重难关,相继在73年8月和75年4月研制成功全液压井下天井牙轮钻机。瑶岗仙钨矿在第一台的 Under the guidance of Chairman Mao’s revolutionary line, in order to “develop the mining industry,” fight the battle of the mines and raise the level of mechanization of the mines, the Yao Gangxian Tungsten Mine and Shuikoushan Mining Bureau vigorously led the superior party committees and the brother units such as the Changsha Mining Research Institute With the help of brave combat, not afraid of setbacks, to overcome the numerous difficulties, in succession in August 73 and April 75 successful development of fully hydraulic downhole patio cone rig. Yao Gang cents tungsten in the first one