| Patents for E21C 41 - Methods of underground or surface mining; Layouts therefor (2,789) |
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| 12/14/2011 | CN102278114A 立体分区大量崩矿采矿方法 Dimensional zoning lot caving mining method |
| 12/14/2011 | CN101871347B 采矿环境再造分层分条中深孔落矿采矿法 Mining environment and recycling in the deep off points stratified ore mining law |
| 12/14/2011 | CN101302933B 一种岩巷综合机械化开拓作业的开拓方法 A pioneering rock roadway mechanized method to develop jobs |
| 12/07/2011 | CN101798927B 近红外线光谱识别煤矸及含矸量控制方法 Near-infrared spectroscopy to identify the amount of gangue and Refuse control method |
| 12/01/2011 | WO2011146983A1 Hydraulic fracturing |
| 12/01/2011 | DE102010022004A1 Utilizing remaining inventories of crude potassium salts, preferably carnallite in the operating phase of a potash mine, comprises covering a cold solution with water after mechanical removal and stretch support underground |
| 11/30/2011 | CN102264998A 连续采矿法 Continuous Mining Law |
| 11/30/2011 | CN102261249A 一种带钢混结构人工假顶的挑檐式无底柱阶段崩落采矿法 Cornice style Pillarless stage a false roof with reinforced concrete artificial caving mining method |
| 11/30/2011 | CN102261248A 一种挑檐式结构的无底柱阶段崩落采矿法 Pillarless phase structure of a cornice caving mining method |
| 11/30/2011 | CN102261247A 一种条带逆向膏体充填的二次采煤方法 Twice a strip mining method of reverse paste filling |
| 11/30/2011 | CN101793150B 一种开采滑坡体下矿体的方法 A method of mining ore body under landslide |
| 11/23/2011 | CN102251775A Ecological restoration method for coal gangue dump |
| 11/23/2011 | CN102251774A Fully mechanized coal mining method combining steeply inclined long-wall drilling type coal mining machine with hydraulic shield type supports |
| 11/23/2011 | CN102251773A Route type upward horizontal layered filling mining method suitable for extremely complex ore body mining |
| 11/17/2011 | WO2011140603A1 An underground mining apparatus and a method of mining subterranean material |
| 11/16/2011 | CN102245858A A method of mining ore |
| 11/16/2011 | CN102242640A Rapid outburst elimination method for cross cut coal uncovering in coal mine underground |
| 11/16/2011 | CN101672180B New uranium mining method-plant uranium mining method |
| 11/09/2011 | CN202031600U Coal mine fully mechanized working face with cut parallel to coal pillar |
| 11/05/2011 | CA2703276A1 Method for improving ore extraction |
| 11/03/2011 | US20110266859 Mining and demolition tool |
| 11/02/2011 | CN1723334B Method and device for determining materials exploited from mining area with at least one mine |
| 11/02/2011 | CN1723333B Method and device for determining materials exploited from mining area with at least one mine |
| 10/26/2011 | CN102226396A Non-explosive mining method by excavation, artificial group-column reconstruction, long-hole caving and subsequent filling |
| 10/26/2011 | CN101749017B Outburst prevention technique for multiple heading in coal mine |
| 10/20/2011 | WO2011127540A1 High energy blasting |
| 10/20/2011 | US20110254347 Method for continuous operation of a surface miner |
| 10/20/2011 | CA2795850A1 High energy blasting |
| 10/05/2011 | EP2370673A1 Continuous mining |
| 10/05/2011 | CN101781988B 'Bottom mining and top dropping' coal mining technology for soft coal bed with firmness coefficient below 1.3 |
| 09/29/2011 | WO2011119756A2 Systems, apparatus, and methods of a dome retort |
| 09/29/2011 | CA2793947A1 Systems, apparatus, and methods of a dome retort |
| 09/28/2011 | CN102203380A Method and apparatus for processing a sized ore feed |
| 09/28/2011 | CN102200013A Emission-free production method of underground metal mine |
| 09/22/2011 | US20110227394 Method, Apparatus And Computer Program For Scheduling The Extraction Of A Resource And For Determining The Net Present Value Of An Extraction Schedule |
| 09/21/2011 | CN101718197B Mineral vein inner advancing direct-route shallow-hole shrinkage mining method |
| 09/21/2011 | CN101598031B Mining method featuring backfilling waste rocks in situ and increasing ore recovery ratio |
| 09/15/2011 | DE102010011262A1 Method for initial operation of colloidal fields for hot leaching extraction of carnallite deposits without solution discharge, involves evaporating incidental spread colloidal solution, where incidental crystallization is separated |
| 09/14/2011 | CN201972707U 一种夹心锚筋混凝土沿空隔离墙 One kind of sandwich anchor reinforced concrete wall along empty |
| 09/14/2011 | CN1963149B Mining method for replacement of banded coal under building by waste rock |
| 09/14/2011 | CN102187059A A method of sorting mined, to be mined or stockpiled material to achieve an upgraded material with improved economic value |
| 09/14/2011 | CN102182461A Efficient mining method for thick metal ore body in slanting |
| 09/14/2011 | CN102182460A High-gas multi-roadway no-coal-pillar mining method |
| 09/14/2011 | CN102182459A Method for recovering remaining triangle coal on two-winged stope by flexible shield support mining method |
| 09/14/2011 | CN101851927B Method for ecologically restoring pits |
| 09/14/2011 | CN101761338B Gob-side entry retaining method of a solid filling coal mining half-section one-leg shed |
| 09/13/2011 | US8016363 Automated excavation machine |
| 09/07/2011 | CN102174892A Rotary cutting type cross-cut coal uncovering method |
| 09/07/2011 | CN102174891A Matching method for mechanized mining equipment |
| 09/07/2011 | CN101469612B Mining method for segmented metallic ore |
| 09/07/2011 | CN101446200B Advancing coal-mining method |
| 09/07/2011 | CN101418688B Intelligent full automatic combine coal mining system |
| 09/01/2011 | WO2011103620A1 A method of reducing subsidence or windblast impacts from longwall mining |
| 08/31/2011 | CN102168560A Displacement crosscut coal uncovering method |
| 08/31/2011 | CN101649740B Ground bored well body structure for gas extraction |
| 08/31/2011 | CN101634227B Flat-bottomed trench shallow hole shrinkage method |
| 08/30/2011 | CA2445415C In situ recovery from a oil shale formation |
| 08/25/2011 | WO2011100808A1 Underground mining |
| 08/25/2011 | US20110203905 Method For Filling Bulk Material |
| 08/25/2011 | CA2789896A1 Underground mining |
| 08/24/2011 | EP2358974A1 Systems and methods for operating a plurality of wells through a single bore |
| 08/24/2011 | CN201943703U 一种模拟煤层开采装置 An analog coal mining equipment |
| 08/24/2011 | CN102165139A Longwall equipment having a cutter loader guided on the longwall conveyor in a height adjustable manner |
| 08/24/2011 | CN101509377B High-dipping ore block house column mining method |
| 08/18/2011 | US20110198914 Method and device for working rock |
| 08/17/2011 | CN102155228A Fully-segmented presplitting squeezing primary-blasting mining method |
| 08/17/2011 | CN102155227A Continuous mining method in vertical direction and application thereof to full ore body continuous mining |
| 08/17/2011 | CN102155226A Roadway backfill mining method for coal seams with medium-high thickness |
| 08/17/2011 | CN102155225A Filling and mining method of coal gases |
| 08/17/2011 | CN102155224A Parallel fully-mechanized working surface for coal mine open-off cut coal pillar |
| 08/12/2011 | CA2690233A1 Drift saver |
| 08/11/2011 | US20110193397 Adaptive Advance Drive Control For Milling Machine |
| 08/10/2011 | CN1776196B Method and system for accessing subterranean deposits from the surface |
| 08/10/2011 | CN102146794A Grouting, consolidating and gob-side tunneling process method |
| 08/10/2011 | CN101598020B Energy-saving and heat-preserving novel technology for exploring bittern by natural flow |
| 08/10/2011 | CN101598019B System for automatically controlling coal-gangue boundary based on terahertz wave |
| 08/09/2011 | CA2642557C Apparatus and method for the detection and rejection of metal in particulate material |
| 08/03/2011 | CN102140916A Process and apparatus for mining open pit |
| 07/28/2011 | WO2010150010A4 Apparatus and methods for forming and using subterranean salt cavern |
| 07/27/2011 | CN101555796B Opencast combined mining method of steeply inclined coal seam groups |
| 07/21/2011 | US20110175429 Mining system |
| 07/20/2011 | CN102128033A Progressive caving mining method |
| 07/14/2011 | US20110173139 Slagging coal combustor for cementitious slag production, metal oxide reduction, shale gas and oil recovery, enviromental remediation, emission control and co2 sequestration |
| 07/13/2011 | EP2342422A1 Method and apparatus for processing a sized ore feed |
| 07/13/2011 | CN102121384A Method for simulating coal seam mining by using rubber hydraulic bags |
| 07/07/2011 | WO2011079538A1 Method for stope-and-fill mining in sections |
| 07/06/2011 | CN1727636B Method and system for accessing subterranean deposits from the surface |
| 07/06/2011 | CN102119261A Mining system |
| 07/06/2011 | CN102119260A Mining system |
| 07/06/2011 | CN102116156A Slope expansion and blasting method for mining deep concave open-pit mine by stages |
| 07/06/2011 | CN102116155A Method for supporting and coalmining in transition section of large-mining-height working face |
| 06/29/2011 | CN1936271B Method for filling coal-steam-free extraction working surface goaf by coal mine waste rock |
| 06/29/2011 | CN102108868A Balanced excavation method for room and pillar mining method |
| 06/29/2011 | CN101338674B Non-pillar sublevel caving mining method for direct loading for ore |
| 06/22/2011 | CN201874603U High-pressure and small-jet device for preventing and controlling outburst of coal and gas |
| 06/22/2011 | CN102102519A Production automation method for fully mechanized mining working face |
| 06/22/2011 | CN102102518A Top coal caving coordinated mining method for thick coal seam under dam body of reservoir |
| 06/15/2011 | CN102094647A Safe and efficient fully-mechanized mining method for thin coal seam under two hard conditions |
| 06/15/2011 | CN102094646A Process process for comprehensively mining extra-hard inter-band coal seams with complex texture |
| 06/15/2011 | CN101634226B Coal digging machine |