| Patents for E21C 41 - Methods of underground or surface mining; Layouts therefor (2,789) |
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| 05/09/2012 | CN102444402A Method for regionally preventing coal and gas outburst |
| 05/09/2012 | CN102444401A Coal mining method by filling on blasting mining face of thin coal seam and relevant equipment |
| 05/03/2012 | WO2012055233A1 Method and device for separating gangue under well |
| 05/03/2012 | US20120109602 Blasting Method |
| 05/02/2012 | EP2446106A2 Apparatus and methods for forming and using subterranean salt cavern |
| 05/02/2012 | CN102434162A Panel tailing filling mining method |
| 05/02/2012 | CN102434161A Stepless cross pitch sectional continuous backfilling mining method of gently-inclined medium-thickness ore body |
| 05/02/2012 | CN102434160A Two-wing-precutting central room-and-pillar-free combined cross cut continuous segmental fill mining method |
| 05/02/2012 | CN102434159A Mining method for ore bed |
| 05/02/2012 | CN102434158A Two-segment dual-wheel sequential top-coal caving method |
| 05/02/2012 | CN102434157A V-shaped groove top plate closing method for goaf area |
| 05/01/2012 | CA2597881C Method and system integrating thermal oil recovery and bitumen mining for thermal efficiency |
| 04/26/2012 | WO2012052496A1 Excavating deposits from an underground formation layer |
| 04/26/2012 | US20120098325 Method for the Automated Production of a Defined Face Opening by Means of Slope-Assisted Radar Navigation of the Roller of a Roller Cutter Loader |
| 04/26/2012 | CA2815146A1 Excavating deposits from an underground formation layer |
| 04/25/2012 | CN102425419A 大倾角沿空不规则综放工作面边采边撤新工艺 Large angle along the empty irregular fully mechanized caving face of new technology while Mining withdrawal |
| 04/25/2012 | CN102425418A 煤矿构造区域人造缺陷体防治冲击地压的方法 Mine construction area of the artificial defects body rockburst prevention methods |
| 04/25/2012 | CN102425417A 易冒顶板锚索毛石墙联合沿空留巷方法 Easy roof fall plate anchor stone wool combined method for Gob |
| 04/25/2012 | CN102425416A Coal mine high stress area roadway driving face impact ground pressure control method |
| 04/25/2012 | CN101725353B 高寒、高海拔地区铀矿勘探遗留设施治理及植被恢复方法 Cold, high altitudes uranium exploration legacy facilities management and revegetation methods |
| 04/19/2012 | WO2012048368A1 A blasting method for beneficiating minerals |
| 04/19/2012 | US20120091782 Method for determining the position or situation of installation components in mineral mining installations and mining installation |
| 04/19/2012 | CA2814209A1 A blasting method for beneficiating minerals |
| 04/18/2012 | CN102419139A 一种带钢混结构人工假顶的无底柱分段崩落法 Sublevel caving a prosthetic roof with reinforced concrete structure |
| 04/18/2012 | CN102418528A End ore-drawing caving mining technology with high efficient using steel concrete composite man-made false roofs |
| 04/18/2012 | CN102418527A 一种缓倾斜极薄沉积型地下铁矿床开采方法 One slow-tilt thin sedimentary iron deposit underground mining methods |
| 04/18/2012 | CN102418526A 中厚急倾斜含废石夹层磷矿体沿走向高分段分部采矿法 Medium steep inclined sandwich containing waste rock phosphate segmented body segments along strike high mining law |
| 04/18/2012 | CN102418525A 软煤层长壁大采高综合机械化采煤末采方法 Soft seam longwall mining height large mechanized coal mining at the end of mining method |
| 04/18/2012 | CN102418524A Novel technology of underground in-situ boring leaching mining |
| 04/18/2012 | CN101936162B 煤矿构造应力区层状巷道底板冲击地压防治方法 Layered mine roadway floor area of tectonic stress bumping prevention and control methods |
| 04/18/2012 | CN101775985B 一种深埋铁矿产资源地下采、选一体化系统 One kind of iron mineral resources buried underground mining, integrated system |
| 04/18/2012 | CN101713290B 煤矿深部全煤巷道冲击地压解危方法 Coal mine roadway in deep full method of bumping Jie Wei |
| 04/11/2012 | CN202187764U 整体移动式砂矿采选机组 Overall mobile sand ore mining unit |
| 04/11/2012 | CN102410022A 一种裂缝性碳酸盐岩储层保护方法 One kind of fractured carbonate reservoir protection methods |
| 04/05/2012 | WO2012040787A1 A method of sorting ore |
| 04/05/2012 | CA2813035A1 A method of sorting ore |
| 04/04/2012 | CN101839134B 一种房式采煤法遗留的不规则呆滞煤柱回收方法 Irregular sluggish recovery method of coal pillar mining method left room type |
| 03/28/2012 | CN102392645A Mining method for treating upward pinch-out of inclined thin ore body |
| 03/28/2012 | CN102392644A Stripped fluid expansion filling mining method for below middle thick coal seam |
| 03/28/2012 | CN102392643A Under-building filling, mining and coal pillar recovering method |
| 03/28/2012 | CN102392642A Method for arranging roadways on coal-pillar-free stope |
| 03/28/2012 | CN102392641A Point pillar type full-ore-deposit middle-section-free upward high-layering continuous propelling fill mining method |
| 03/28/2012 | CN102392640A Close-range thin coal layer simultaneous mining and parallel transporting method |
| 03/27/2012 | CA2476827C Burn assisted fracturing of underground coal bed |
| 03/22/2012 | WO2012034180A1 Blending mined material |
| 03/22/2012 | WO2012034179A1 A mining operation involving dry sorting a mined or stockpiled material, producing an upgraded material and possible further blending to produce a product of required customer specification |
| 03/22/2012 | CA2811519A1 Blending mined material |
| 03/21/2012 | CN102383801A Quantitative determining method for reasonable thickness of covered rock layer by using stope caving method |
| 03/21/2012 | CN101858217B House pillar changeable panel upward demix filling mining method |
| 03/20/2012 | CA2466114C Continuous extraction of underground narrow-vein metal-bearing deposits by thermal rock fragmentation |
| 03/15/2012 | US20120062016 Mobile oil sands mining system |
| 03/14/2012 | CN102373936A Hydraulic telescopic bracket for downhole coal mine and downhole coal mining method using same |
| 03/14/2012 | CN102373927A Slice mining technology and coal winning machine thereof |
| 03/07/2012 | EP2188220B1 Method of raising the ph of acidic bodies of water |
| 03/07/2012 | CN101725352B Method for filling solid and fully mechanizing and recovering room type coal pillar |
| 03/01/2012 | US20120049607 Mineral seam detection for surface miner |
| 02/23/2012 | US20120043801 Method and apparatus for creating a planar cavern |
| 02/23/2012 | US20120043800 Method and apparatus for creating a planar cavern |
| 02/22/2012 | CN102359378A Coal blasting production method increasing lump coat rate |
| 02/22/2012 | CN102359377A Three-dimensional zoned collaborative caving mining method for pillar groups |
| 02/16/2012 | US20120038203 Pick Assembly with Integrated Piston |
| 02/09/2012 | WO2012018118A1 False ore, and analysis system using same |
| 02/09/2012 | WO2012016514A1 Process for fluid drainage and collection by in-situ leaching involving diversion holes |
| 02/09/2012 | WO2012016513A1 Liquid guiding and collection process with secondary channels for in situ leaching |
| 02/02/2012 | US20120027516 Methods for constructing underground borehole configurations and related solution mining methods |
| 02/01/2012 | CN102337893A Method for processing suspension top by medium-deep hole blasting on upper and lower shoes |
| 02/01/2012 | CN102337892A Upward drift filling method |
| 01/26/2012 | WO2012009759A1 Hydraulic mining system for tabular orebodies utilising directional drilling techniques |
| 01/26/2012 | US20120019045 Water spray system for continuous miner and method of use |
| 01/26/2012 | US20120019044 Holder Block for Both Radial and Conical Tool Picks |
| 01/26/2012 | US20120017792 Method of blasting |
| 01/26/2012 | CA2806084A1 Hydraulic mining system for tabular orebodies utilising directional drilling techniques |
| 01/25/2012 | CN101749018B Coal mining method with direct coal pillar recovery |
| 01/24/2012 | US8103364 Waste disposal during pit mining |
| 01/18/2012 | CN102322263A Roof cutting and pillar dilapidation method in goaf |
| 01/18/2012 | CN102322262A Control method for coal mine insular coal pillar crossheading rock burst |
| 01/18/2012 | CN102322261A Small coal pillar pressure-equalizing abandoned roadway passing method for large-mining height full-mechanized working faces |
| 01/17/2012 | US8099240 Blasting method |
| 01/12/2012 | WO2012006562A1 Continuous-extraction mining system |
| 01/12/2012 | WO2012006559A1 Continuous-extraction mining system |
| 01/12/2012 | CA2804992A1 Continuous-extraction mining system |
| 01/12/2012 | CA2804990A1 Continuous-extraction mining system |
| 01/11/2012 | CN101881167B Coal face stump mining method |
| 01/11/2012 | CN101787889B Comprehensive mechanized coal mining method through cantilever support |
| 01/05/2012 | US20120001474 Method of mining ore |
| 01/04/2012 | CN102305074A Flat-bottomed pillar sublevel caving method of reinforced concrete structure artificial roof |
| 01/04/2012 | CN102305073A Sill pillar staged caving stoping method with single drift creasing structure |
| 01/04/2012 | CN102305072A Inverted triangle cutting process for rapid excavation of well lane |
| 01/04/2012 | CN101915107B Method for arranging coal mine large-mining-height working surface equipment |
| 01/04/2012 | CN101812988B Method for mining gently dipping to steep dipping thick and large ore bodies |
| 12/29/2011 | DE102010022004B4 Verfahren zur Nutzung von Restvorräten in der Nachbetriebsphase von Kaligruben Method for using remaining stocks in the post of potash mines |
| 12/28/2011 | CN102296958A 人造空间缺陷体防治冲击地压方法 Artificial space Defect Prevention & Treatment of bumping method |
| 12/28/2011 | CN102296957A 冲击地压煤层巷道掘进时的一炮贯通卸压法 A gun through the decompression method rockburst when roadway excavation |
| 12/21/2011 | EP2396621A1 Method of blasting |
| 12/21/2011 | CN102287211A 沿空留巷端头液压支架及其进行沿空留巷煤矿开采的方法 Gob - end hydraulic support and a method for Gob coal mining |
| 12/21/2011 | CN102287189A 一种确定矿山露天转地下开采合理界线的方法 An open-air mining to underground mining method for determining reasonable boundaries |
| 12/21/2011 | CN101705821B 一种用于煤矿开采中坚硬顶板控制放顶的方法 A method of coal mining in hard roof caving control for |
| 12/20/2011 | US8082167 Method, apparatus and computer program for scheduling the extraction of a resource and for determining the net present value of an extraction schedule |
| 12/15/2011 | WO2011155846A1 System and method for oil and/or gas development |
| 12/15/2011 | WO2011119756A3 Systems, apparatus, and methods of a dome retort |