Roof fall in mines is one of the severe disasters in mining operation.
矿山冒顶是矿山生产过程中严重灾害之一。
The application of study results is very available for mining operation.
研究结果应用于生产实践中，效果很好。
The operation cost of small scale trackless equipment in a mining test is described.
介绍了小型无轨设备在采矿试验中的运行成本情况。
Safety in production is an important subject of mining enterprises operation management.
安全生产是矿山企业生产经营管理的主题。
Explosion is the first operation of the mining procedures in opencasting.
露天矿爆破工程是首要开采工序。
Explosion is the first operation of the mining procedures in opencasting.
露天矿爆破工程是首要开采工序。
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