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本期发表的“进一步提高硬合金钻头钻进技术，让岩心钻探生产效率再跃进一步”和“大力推广钢粒钻进、混合钻粒钻进法，进一步提高坚硬岩层中的钻进效率”两篇文章是根据当前地质部系统各勘探队在硬合金钻进、钻粒钻进方面获得的成果、存在的问题以及操作规范的改进等几方面资料汇总后约请耿瑞伦、童华真两同志执笔写成的，内容均较具体、实用，希望能在实际工作中起到一定的指导作用，从而促进生产效率进一步跃进提高。
This issue of “further improve hard alloy drill bit drilling technology to further enhance core drilling productivity” and “vigorously promote the steel grain drilling, mixed drilling method to further improve the hard rock in the drilling efficiency” two Article is based on the current Geological Department of the exploration team in the hard alloy drilling, drilling obtained results, problems and operational practices to improve several aspects of the information gathered after the appointment of Comrade Gengrui Lun, Tonghua two comrades wrote The content is more specific and practical, hoping to play a guiding role in practical work, so as to further promote the production efficiency to a higher level.