根据毛主席“兵要精，武器要好”的教导，我队广大职工自行设计和试制成功了三十米工程地质钻机，以适应厂矿、民用、建筑、水电、交通运输等小型工程地质勘探的急需。经过30个钻孔钻进500余米的效果看，该机基本适合需要。外貌见附图。 According to Chairman Mao’s “soldiers should be refined, weapons should be better,” the teaching and the majority of our team members have successfully designed and trial-produced 30-meter engineering geological drilling rigs to meet the urgent needs of small-scale engineering geological exploration in factories, mines, civil engineering, construction, hydropower, transportation, . After drilling 30 holes drilling effect of more than 500 meters, the aircraft is basically suitable for needs. See the attached picture.