针对矿井采掘计划管理的复杂性，采用J2EE平台开发了矿井采掘计划管理信息系统。

In view of complexity of coal mining plan management, a management information system of coal mining plan is developed with J2EE platform.

分析阳泉市矿井瓦斯的利用现状和进展，寻找有效利用矿井瓦斯的途径。

The way of making use of mine gas effectively was searched by studying present situations and developments of making use of mine gas of Yangquan city.

罐笼从矿井里吊了起来。

The cage was drawn up from the mine.

黑龙江鸡西、鹤岗、双鸭山和七台河四大主要矿区有矿井42个，其中70%都是高瓦斯矿井。

There are 42 mine Wells in four major mine areas, Jixi, Hegang, Shuangyashan and Qitaihe, in Heilongjiang province, China, 70% of which are high gas mine Wells.

视察员已控制两个矿井的公司电话线，以确保矿井工头得不到井上检查人员活动的信息。

The inspectors took control of company phone lines at two of the mines to ensure that mine foremen were not tipped off about the presence of inspectors above ground.