recoverable coal

基本解释

Combined 25 Fai green rock walls altogether , there are 20 in the coal seam recoverable range among them.
共组合25条辉绿岩墙，其中20条分布在煤层可采范围内。
The standards for plotting out the economic recoverable reserves of coal and the main effect factors and significance are expounded.
阐述了经济可采储量划分的标准、主要影响因素及意义。
Fengfeng rich in mineral resources, solid industrial base, has proven the value of recoverable resources of coal, china clay, limestone and so on more than 30 kinds;
峰峰矿产资源丰富，工业基础坚实，已探明具有可开采价值的资源有煤、瓷土、石灰石等30多种；

Based on these estimates, the EIA concludes that the U.S. will not exhaust its recoverable coal reserves at current mining levels for 222 years.
FORBES: U.S. Crowned King of Coal, Some Disagree
The Energy Information Administration (EIA) puts it at around 37tcm of recoverable reserves, two-thirds of which is shale gas and the rest tight gas and coal-bed methane.
ECONOMIST: Shale gas is giving a big boost to America’s economy