| Patents for E21C 41 - Methods of underground or surface mining; Layouts therefor (2,789) |
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| 09/27/2012 | US20120242135 Method of underground rock blasting |
| 09/26/2012 | CN102691502A Method for improving recovery rate of fully mechanized top coal caving |
| 09/19/2012 | CN102678167A Hydraulic-fracturing rock cross-cut coal uncovering method for short-distance coal beds |
| 09/19/2012 | CN102678124A Method for back-filling surface subsidence area based on underground metal mineral deposit mining |
| 09/19/2012 | CN102678123A Gob-side entry retaining method for thin coal layer under hard limestone top plate |
| 09/19/2012 | CN102678122A Improved inlet-route stoping method for large, thick and cracked ores under scattered body through top and bottom column |
| 09/19/2012 | CN102678121A Layered top-controlling filling mining method for residual ores in deep hole in diskless area |
| 09/19/2012 | CN102678120A Method for releasing pressure and removing danger of rock burst |
| 09/19/2012 | CN102678119A High-efficiency filling mining method for controlling rock mass movement |
| 09/19/2012 | CN102678118A Method for determining height of caving zone of stope |
| 09/19/2012 | CN102080541B Bidirectional cutting method for continuous miner |
| 09/12/2012 | EP2496773A1 Improved slope of an open cut mine |
| 09/05/2012 | CN102654054A Method for determining height of caving zone of stope with internal-staggered layer-staggered position type roadway layout |
| 09/05/2012 | CN101737052B Sublevel fill-mining method |
| 08/23/2012 | DE202011050143U1 Gewinnungseinrichtung zum Abbau von flözartig oder massiv abgelagerten mineralischen Materialien und Gewinnungsmaschine hierfür Obtaining means for reducing flözartig or solid deposited mineral materials and mining machine for this purpose |
| 08/22/2012 | CN102644464A Constructing method for mining embedded artificial boundary ore pillar from open-pit to underground mine |
| 08/22/2012 | CN101832138B Method for controlling rising type reverse-obliquity mining rock stratum of ultra-thick highly-oblique coal bed |
| 08/22/2012 | CN101498225B U+I type ventilating system for top-coal caving face |
| 08/16/2012 | US20120205964 Segments and apparatus for high wall mining including fluid feed |
| 08/16/2012 | US20120205963 Method of characterising a resource |
| 08/15/2012 | CN102635392A Co-extraction method for pillar-less coal and gas of advanced entry-retaining construction extraction engineering |
| 08/15/2012 | CN102635358A Sill pillar-free block caving method mining process capable of reducing waste rock interfusion amount through water injection |
| 08/15/2012 | CN102635357A Pillarless phased caving method with top tailing crushed stone filling and sectional water injection binding |
| 08/15/2012 | CN102635356A Medium-length hole mining method in multiple blasting free faces of high dipping thin veins |
| 08/14/2012 | US8240775 Non-motorized gold mining apparatus |
| 08/08/2012 | EP2483630A1 A method of underground rock blasting |
| 08/08/2012 | CN202370521U Steel wire rope cemented backfill for backfilling gob of post-exploited mine |
| 08/08/2012 | CN101936163B Method for recovering large mining height fully-mechanized face end part ground coal |
| 08/08/2012 | CN101864957B Great ore drawing simultaneous filling non-top column shrinkage mining method |
| 08/08/2012 | CN101598009B Crystallization prevention control device for high temperature brine |
| 08/02/2012 | WO2012101478A1 A method of mineral fuel beneficiation with subsequent delivery to the consumer by pipeline transportation |
| 08/01/2012 | CN102619519A Ore drawing technique for controlling fluidity of ore rocks via pillarless vertical end-wall sublevel caving method |
| 08/01/2012 | CN102619518A Ore drawing technique for controlling fluidity of ore rocks via pillarless cornice end-wall sublevel caving method |
| 08/01/2012 | CN102619517A Overlaying rock cemented pillarless sublevel caving method |
| 08/01/2012 | CN102619516A Top-filled pillarless vertical end-wall sublevel caving method extraction technique |
| 08/01/2012 | CN102619515A Top-filled high-end-wall pillarless sublevel caving method extraction technique |
| 08/01/2012 | CN102619514A Top-filled pillarless cornice end-wall sublevel caving method extraction technique |
| 08/01/2012 | CN102619513A Room and pillar type medium-length hole filling mining method using bottom ore withdrawal structures simultaneously arranged in original rock |
| 08/01/2012 | CN101824985B Non-coal pillar mining method of protective coal pillars in coal mine |
| 08/01/2012 | CN101749016B Ecological sealing slurry flame retardation and vegetation recovery technology for coal gangue hill |
| 07/26/2012 | US20120187743 Method of controlling a miner to cause wobble in the cutting heads |
| 07/25/2012 | CN102606161A Outdoor underground three-period mining method of inclined, thick and large mineral deposit |
| 07/25/2012 | CN102606160A Method for recovering coal in easily sliding area of strip mine |
| 07/25/2012 | CN102606159A Medium thick heavy-pitch crushed ore body frame type artificial top downward segmenting cemented filling method |
| 07/25/2012 | CN102606158A Novel low coal seam coal mine underground mining complete equipment |
| 07/25/2012 | CN101988385B Ventilation method for karst water-rich mine |
| 07/25/2012 | CN101967974B Method for crossed operation of vertical shaft backward-excavation deepening and exploitation projects |
| 07/25/2012 | CN101915101B Method of mining coal from heavy pitch thick coal seam |
| 07/25/2012 | CN101915099B Bidirectional U-shaped coal-mining method of thick coal bed by gateway layout along stability layer |
| 07/25/2012 | CN101514630B Plate-type ore-drawing collapse mining method |
| 07/19/2012 | US20120181844 Continuous mining |
| 07/18/2012 | CN102597379A Improved slope of an open cut mine |
| 07/18/2012 | CN102587916A Method for filling and mining after ore caving |
| 07/18/2012 | CN102587915A Induction caving mining method under artificial false roof |
| 07/18/2012 | CN102587914A Strip-type Wongawilli mining method of coal buried under building |
| 07/18/2012 | CN102587913A Steeply inclined seam dip oblique strike longwall comprehensive mechanical coal mining method |
| 07/11/2012 | CN102562145A Dry-type cement filling method realized by aid of extracted tail salt of salt deposit |
| 07/11/2012 | CN102562069A Fluid filling and replacement mining technology for coal bed on highly confined water body |
| 07/11/2012 | CN102562068A Mine subsequent cemented and non-cemented filling mining method |
| 07/11/2012 | CN102562067A Method for controlling rock burst by pulse fracturing |
| 07/11/2012 | CN102562066A Method for mechanically mining coal by using steep seam pseudo inclination bracing type retractable flexible shield support |
| 07/11/2012 | CN102562065A Sublevel open-stop and delayed filling mining method |
| 07/04/2012 | CN102549373A A method of underground rock blasting |
| 07/04/2012 | CN102536301A Protective layer exploitation and gas pumping-exhaust management system and using method thereof |
| 07/04/2012 | CN102536244A Method for mining coal on automation working face of low-seam shearer loader |
| 07/04/2012 | CN102536243A Coal seam freezing type cross-drift coal uncovering method |
| 07/04/2012 | CN102536242A conveyor gateway large-angle rotary stoping method of unequal length fully-mechanized mining working surfaces |
| 07/04/2012 | CN102536241A Tilting ore body stoping process |
| 07/04/2012 | CN102536240A Method for preventing rock burst by adopting high-pressure fracturing |
| 07/04/2012 | CN102536239A Long-wall working face coal pillar-free mining method |
| 07/04/2012 | CN102536238A Mining method for large-inclined angle laminar non-coal solid mineral deposit |
| 07/04/2012 | CN102536233A Combined height-adjustable coal cutting machine with small roller and large mining height, as well as coal cutting process of combined height-adjustable coal cutting machine |
| 06/28/2012 | US20120161493 Method for Producing a Face Opening Using Automated Systems |
| 06/27/2012 | CN102518438A Roof regeneration medium-length hole ore blast backfill mining method |
| 06/27/2012 | CN102518437A Coal-mining method for thin bedrock section |
| 06/27/2012 | CN102518436A Method for controlling tectonic rock burst in coal mine tunneling |
| 06/27/2012 | CN101818643B Stepped non-pillar continuous filling mining method for deep well super high large breaking ore body panel |
| 06/20/2012 | CN102505943A Water conservation coal cutting method for small and medium-sized coal mines in waterhead area |
| 06/20/2012 | CN102505942A Safe and fast driving method for large-section open-off cut time-by-time tunneling |
| 06/20/2012 | CN101737049B Multi-working face circulating development driving production organization method |
| 06/14/2012 | US20120146388 Construction Machine, In Particular Road Milling Machine, Miner, Recycler or Stabilizer |
| 06/13/2012 | CN102493838A Method for fully mechanized continuously-filling coal mining of steeply pitching coal seam |
| 06/13/2012 | CN102493806A Mechanized continuous mining method for wall-type gentle-inclined thin ore body |
| 06/13/2012 | CN102493805A Method for efficient shaft coal uncovering in high gas mine |
| 06/07/2012 | US20120139325 System and method for terrain analysis |
| 06/06/2012 | CN102486090A Method for recovering upper boundary residual mine and forming lower mining cover layer of stope |
| 06/06/2012 | CA2757098A1 Systems, compositions, and methods for dewatering mine tailings |
| 06/05/2012 | CA2470913C Method and means for processing oil sands while excavating |
| 05/30/2012 | CN101824986B Coal mining process of drilling, loading, conveying and anchoring integral machine |
| 05/30/2012 | CN101424186B Method for recovering disc ore on incline ore block |
| 05/29/2012 | CA2623698C Method and system for mining hydrocarbon-containing materials |
| 05/23/2012 | CN102472100A 地下采矿 Underground Mining |
| 05/23/2012 | CN102465705A 一种过联络巷道的采矿方法 A liaison mining method over the roadway |
| 05/23/2012 | CN102465704A 一种用于倾斜中厚矿体的无底柱分段崩落采矿法 Pillarless A tilt in the thick orebody sublevel caving mining method |
| 05/23/2012 | CN101858216B Method for recovering stagnant coal pillars left by breast type coal mining method |
| 05/18/2012 | WO2012061901A1 A scraper machine |
| 05/10/2012 | US20120114429 Frozen baclfill mix formulations and process for use thereof in underground mining applications |
| 05/09/2012 | EP2449213A1 Underground mining |
| 05/09/2012 | CN202215249U Layering pack wall along for hollow entry retaining in solid filling coal mining |
| 05/09/2012 | CN102444403A Pillarless sublevel caving method based vertical partitioning and combined ore drawing extraction technology of gently inclined ore bodies |