Tailings

（重定向自Culm dump）

Yellow boy in a stream receiving acid mine drainage from surface coal mining.

Emergency tailing ponds constructed in response to the 2015 Gold King Mine Spill in Colorado, pictured on August 7, 2015. The ponds were constructed to contain a spill created by EPA workers, while trying to install a cleanup system on the main tailing pond for the long closed mine.

Tailings, also called mine dumps, culm dumps, slimes, tails, refuse, leach residue or slickens, are the materials left over after the process of separating the valuable fraction from the uneconomic fraction (gangue) of an ore. Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed. The amount of tailings can be large, ranging from 90–98% for some copper ores to 20–50% of the other (less valuable) minerals.

单词	Culm dump
释义	Culm dump 英语百科 Tailings （重定向自Culm dump） Tailings, also called mine dumps, culm dumps, slimes, tails, refuse, leach residue or slickens, are the materials left over after the process of separating the valuable fraction from the uneconomic fraction (gangue) of an ore. Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed. The amount of tailings can be large, ranging from 90–98% for some copper ores to 20–50% of the other (less valuable) minerals.
随便看	Fat intolerance的意思 fatinue breakdown的意思 fatinue crack的意思 fatinue life的意思 fatinue limit的意思 fatinue point的意思 fatinue rapture的意思 fatinue ratio的意思 fatinue rest的意思 fatinue strength的意思 fatinue stresses的意思 fatique breakdown的意思 fatique effect的意思 fatique testing at elevated temperature的意思 fatiscence的意思 fatiscent的意思 Fatism的意思 fatisms的意思 Fatist的意思 fat job的意思 fat jokes的意思 fatkini的意思 fatkinis的意思 fatl的意思 Fat laden macrophage的意思