Four miners were still trapped in a flooded coal mine in Shanxi. The accident occurred Friday afternoon in a coal pit run by the Lingshi coal mine.
山西省灵石煤矿有限公司15日下午发生透水事故，当班6人中只有2人安全出井，目前尚有4人被困。
Establishing the safe and utility orientation system of the mine personnel in coal pit is of great significance for improving the safe production management of the coal pit.
建立可靠实用的煤矿井下人员定位系统，对改善煤矿的安全生产管理有着重要的现实意义。
The acid water in coal pit can be well controlled by adding calcium carbonate and lime.
阐述通过添加碳酸钙和石灰，可使酸性采煤坑水得到很好治理。
From Shenmu to Daliuta section along Shensuo railway, we set up 6 survey lines in order to understand the condition of underground coal pit and tunnel.
在神朔铁道神木至大柳塔段，为了解地下煤窑空洞与隧道情况，布设了6条测线，共计388个测点，进行了地磁总强度观测工作。
Whether in an individual coal pit, oil, or gas field, a nation or the planet as a whole, fossil fuel reserves and production tend to follow a bell curve over time.
无论是在个别的煤矿、石油或天然气场、一个国家或整个地球，矿物燃料储量和生产随著时间的推移，往往遵循钟形曲线。
Police say a power cut is compromising the ventilation system in the Pike River Coal Pit in a remote part of the country's South Island.
警方说，停电影响了该国南岛偏远地区的派克河煤矿矿井的通风系统。
Police say a power cut is compromising the ventilation system in the Pike River Coal Pit in a remote part of the country's South Island.
警方说，停电影响了该国南岛偏远地区的派克河煤矿矿井的通风系统。
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