safety in production of coal

The power run steadily, and its brake function was improved apparently, and satisfied with require of safety in production of coal mine.

改进后的制动电源制动性能有了明显提高，运行稳定，能满足煤矿安全生产的要求。

This paper introduces several methods for improving the life expectancy of mine hoisting cable, which have the practical reference value for the safety in production of coal mine.

介绍了提高矿用提升钢丝绳寿命的几种方法，以期对煤矿的安全生产有一定的参考作用。

For coal enterprises, the uniqueness of safety work decides a high proportion of safety cost in coal production cost.

对于煤炭企业来讲，安全生产的特殊性决定了安全成本在煤炭生产成本中占有很高的比例。