1.
The State shall encourage coal mining enterprises to develop coal washing and processing as well as comprehensive exploitation and utilization of coalbed methane, gangue, coal slime, stone coal and peat.
国家鼓励煤矿企业发展煤炭洗选加工，综合开发利用煤层气、煤矸石、煤泥、石煤和泥炭。
2.
The lime-stone rocks bed up against the coal.
石为岩层紧靠着煤矿层。
3.
"fossil fuels: coal, oil, and natural gas"
矿物燃料(煤、石油、天然气)
4.
extract (ore) from a strip-mine.
从露天煤矿中开发矿石。
5.
Coal and oil are natural products.
煤和石油是天然物产。
6.
Coal is primarily graphite.
煤从根本上说是石墨。
7.
Talks of the Utilization of Spoil and Slime in Datong Coal Mine Group
同煤集团煤矸石及煤泥资源综合利用探讨
8.
New Technique of Driving Cross-cut through Coal Seam with High Bursting Danger
高瓦斯突出煤层石门揭煤后过煤门新工艺
9.
Discussion on technical reformation of recovery system of coarse clean coal and coarse middling in Laoshidan Coal Preparation Plant
老石旦洗煤厂粗精煤及粗中煤回收系统改造
10.
South African Coal, Oil and Gas Corporation, Ltd.
南非煤炭、石油和煤气有限公司
11.
Coal, oil,wood and gas are fuels.
煤炭，石油，木柴和煤气都是燃料。
12.
National Resources: petroleum, gas, coal, chromium, nickel and copper.
自然资源：石油、煤气、煤、铬、镍和铜。
13.
Gangue Generating Electricity Technology Alteration Project Research of the Group of Coal PAN;
攀煤（集团）煤矸石发电技改项目研究
14.
Permo-Carboniferous Coalfield Coal-Control Structure Features in Hebei Province
河北省石炭—二叠纪煤田控煤构造特征
15.
Talk About Pollutim Prevention and Use of Qianqiu Coal Nine Gangue Hill
千秋煤矿煤矸石山的污染防治与利用
16.
Numerical approach on outburst in crosscutting in coal seam containing gas at Hongling coal mine
红菱煤矿石门揭煤突出过程模拟研究
17.
Synthesis of β-SiC Micro-powder with Gangue or Silica and Anthracite;
煤矸石/石英砂与无烟煤合成β-SiC微粉研究
18.
The Study of Coal Petrology and Coal Geochemistry in Permo-Carboniferous Coal from Datong Coalfield;
大同煤田石炭二叠纪煤的煤岩学和煤地球化学研究