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几年来由于国民经济各部门对非金属矿产品的需要,非金属矿山的勘探开采工作,有了相当的发展。石绵开采工业1957年开采计划比1952年提高了约4倍多;磁土生产1957年比1952年增长了342%;石膏1957年比1952年增长了331%;云母、萤石、水晶等也都有了相应的增长。但是随着国民经济的发展,我国制造工业、建筑业和其他工业部门对非金属矿产品的需要将日益增加,现有非金属矿开采虽不断增长,却远远
In recent years, due to the need of non-metallic mineral products by various departments of the national economy, exploration and production of non-metallic mines have seen considerable progress. Asbestos mining industry in 1957 mining plans increased by about 4 times more than in 1952; magnetic production in 1957 increased by 342% over 1952; gypsum in 1957, an increase of 331% over 1952; mica, fluorite, crystal, etc. are also With the corresponding increase. However, with the development of the national economy, China’s manufacturing industry, construction industry and other industrial sectors will increasingly demand non-metallic mineral products. Although the existing non-metallic mineral mining has been growing, it is still far behind