我队自一九七五年八月开始，先后在某多金属矿、某黄铁矿等四个矿区推广使用取样钻，取得了显著的效果。到八○年底止，累计完成工作量6960米，开动790个台班，平均台班效率8.81米；共完工钻孔618个，平均孔深11.19米，最大孔深45.25米，工程质量逐年提高，平均单位成本5.53元。几年来，通过生产实践证明，取样钻确实具有施工速度快、取样质量高、单位成本低等优点，在某些矿区完全能够以钻代槽、井，满足地质工作要求，大大加快普查找矿工作的步伐，是一种多快好省开展普查找矿工作的有效手段，有着广泛的使用范围。 Since August, 1975, our team has promoted the use of sampling drills in four mining areas, including polymetallic ore and pyrite, and achieved remarkable results. By the end of 1980, a total of 6,960 meters of work had been completed and 790 station classes had been started, with an average efficiency of 8.81 meters. A total of 618 boreholes were drilled, with an average hole depth of 11.19 meters and a maximum hole depth of 45.25 meters. The quality of the project increased year by year, The average unit cost of 5.53 yuan. In recent years, production practice has proved that sampling drilling has the advantages of fast construction speed, high sampling quality and low unit cost. In some mining areas, it is entirely possible to drill for sinks and wells to meet the geological work requirements and greatly speed up the prospecting work of census prospecting The pace is an effective means of carrying out census prospecting work in the provinces with more rapid and good results and has a wide range of applications.