最近部召开的局长会议上，向我们提出一项光荣而艰巨的任务：探矿工程要力争大面积丰产。在煤田勘探中争取有100台钻机年进尺达到10000公尺以上，其它矿种部分钻机也力争达到5000公尺以上。要想达到上述指标，必须在地质勘探工作中开展无岩心钻探。1959年全国钻探进尺为1070万公尺，其中有35％ At the recent meeting of the Secretary-General, he proposed to us a glorious and arduous task: prospecting projects should strive for large-area and high-yielding areas. In the coal exploration for 100 drilling rig annual footage reached 10,000 meters above the other mining part of the rig also strive to reach more than 5,000 meters. To reach these targets, coreless drilling must be carried out in geological exploration. National drilling footage in 1959 was 10.7 million meters, of which 35%