| 单词 | underground mining |
| 释义 | underground mining For some, the end of their careers in underground mining has itself been a painful loss. Times, Sunday Times It expects production at the underground mining portals to start by the end of the first quarter of 2009, with the first coal to be sold in the following quarter. Times, Sunday Times Experts caution against drawing too many conclusions from night light: industries such as petroleum refining, which produces flares of flame, generate a disproportionate amount of light compared with underground mining. Times, Sunday Times Fun and underground mining don't mix, apparently. Times, Sunday Times The mine uses the cut-and-fill or stope-and-fill underground mining method. Retrieved from Wikipedia CC BY-SA 3.0 |
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