| Patents for E21C 41 - Methods of underground or surface mining; Layouts therefor (2,789) |
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| 12/17/2013 | US8608249 In situ thermal processing of an oil shale formation |
| 12/12/2013 | WO2013181720A1 Methods, systems and devices for monitoring movement of rock in a mine |
| 12/12/2013 | CA2875684A1 Methods, systems and devices for monitoring movement of rock in a mine |
| 12/11/2013 | CN203335073U Fully-mechanized-mining coal drilling unit and fully-mechanized-mining coal drilling machine |
| 12/11/2013 | CN103437769A Medium-length hole ore breaking synergistic anchor cable support subsequent filling mining method of combined reconstructed structural body |
| 12/11/2013 | CN103437768A Pre-set space filling mining method without top column and bottom column |
| 12/11/2013 | CN103437767A Intensified mining technology of regional mine |
| 12/11/2013 | CN103437766A On-site crushing mining method |
| 12/11/2013 | CN103437765A Coal mine rock stratum mobile control mining-filling-preserving coupled coordination mining method |
| 12/11/2013 | CN103437764A Novel process for directional drilling for coal mining |
| 12/05/2013 | WO2013178012A1 Method for fluid carriage in deep-seam coal hydraulic mining |
| 12/05/2013 | DE102012011145A1 Carbon dioxide-based in-situ-extracting and processing method for fluid mining industry during extracting e.g. cerium from inferior ore reservoir, involves decomposing rock with supercritical carbon dioxide-water mixture |
| 12/04/2013 | CN203321521U Short pass type united mining equipment |
| 12/04/2013 | CN103422870A Roof supporting method for full super-high seam mining |
| 11/28/2013 | WO2013175383A1 Slope design |
| 11/27/2013 | CN103410515A Three-soft-coal-layer reciprocating-type coal-pillar-free fully-mechanized mining method |
| 11/27/2013 | CN103410514A Pressure relief and coal extraction method for deeply-compressed ore body |
| 11/27/2013 | CN103410513A Mechanical stopping process for hard-to-mine ore body |
| 11/21/2013 | US20130307315 Launch platform for high wall mining |
| 11/20/2013 | CN203296774U Novel mining machine |
| 11/20/2013 | CN103397884A Milling machine, in particular surface miner, and method for mining milled material of an open cast surface |
| 11/20/2013 | CN103397883A Comprehensive control method for rockburst in multiple-coalbed mining mine |
| 11/20/2013 | CN103397882A Coal mining method and mine structure capable of preventing underground coal mine gas explosion and combustion |
| 11/20/2013 | CN103397881A Engineering method for enlarging mining area of chambers |
| 11/20/2013 | CN102444402B Method for regionally preventing coal and gas outburst |
| 11/13/2013 | CN103388477A Cutting method for creating open-off cut in fully mechanized mining face of steep coal seam and supporting device therefor |
| 11/13/2013 | CN102562068B Mine subsequent cemented and non-cemented filling mining method |
| 11/13/2013 | CN102562066B Method for mechanically mining coal by using steep seam pseudo inclination bracing type retractable flexible shield support |
| 11/13/2013 | CN102410022B Method for protecting fissured carbonate reservoir |
| 11/07/2013 | WO2013163756A1 Sorting materials using pattern recognition, such as upgrading nickel laterite ores through electromagnetic sensor-based methods |
| 11/06/2013 | CN103382841A Overburden strata low dilution ore drawing quantitative control method |
| 11/06/2013 | CN102518438B Roof regeneration medium-length hole ore blast backfill mining method |
| 11/06/2013 | CN102418528B End ore-drawing caving mining technology with steel concrete composite man-made false roofs |
| 11/06/2013 | CN102392640B Close-range thin coal layer simultaneous mining and parallel transporting method |
| 10/31/2013 | WO2013159749A1 Method for distributed storage and use of underground water in mine |
| 10/30/2013 | CN103375169A Method for applying diamond wire saw to large-section underground rock project |
| 10/29/2013 | US8571688 System and method for optimization of gas lift rates on multiple wells |
| 10/29/2013 | CA2753811C Method of processing tailings from solvent-based hydrocarbon extraction |
| 10/24/2013 | WO2013105882A3 Method for the subterranean leaching of nickel-cobalt ores |
| 10/23/2013 | CN103362511A Steep medium-thickness coal seam stepped coal pillar-free coal mining method |
| 10/23/2013 | CN103362510A Sublevel-drilling bench-combination ore-removal sublevel-room mining method |
| 10/23/2013 | CN103362509A Coal mine unconsolidated aquifer mining upper limit evaluation and mining risk evaluation method |
| 10/23/2013 | CN103362508A Mine development method |
| 10/23/2013 | CN102493806B Mechanized continuous mining method for wall-type gentle-inclined thin ore body |
| 10/16/2013 | CN203239350U Anti-freezing ore extraction device |
| 10/03/2013 | WO2013105881A3 Method for developing the non-water-saturated part of an ore body |
| 10/03/2013 | US20130257137 Launch vehicle for a mining system, a mining system and a method for mining |
| 10/02/2013 | CN103334754A Steering mode and mining method during steering period of adjacent strip regions of sub-horizontal deposit |
| 10/02/2013 | CN103334753A System and method for remote and visual coal mining flow supervision of coal mine underground working face |
| 10/02/2013 | CN102071941B Fully mechanized mining gob-side entry retaining-based concrete block staggered joint longitudinal stacking wall forming method |
| 09/26/2013 | DE102012102511A1 Charcoal extracting plant used in coal mining industry, has increase profile whose upper edge is projected beyond upper edge of side profile, and loading ramp that is formed by arrangement of bits at leading and trailing gumption shoes |
| 09/25/2013 | CN103321677A Method for actively controlling motion of coal mine critical layers by using strip filling walls |
| 09/25/2013 | CN103321642A Gob-side entry retaining adjoining rock stabilizing method based on lateral rock formation pre-splitting control |
| 09/25/2013 | CN103321641A Solid-state combustible ice exploitation method |
| 09/25/2013 | CN102425416B Coal mine high stress area roadway driving face impact ground pressure control method |
| 09/25/2013 | CN102242640B Rapid outburst elimination method for cross cut coal uncovering in coal mine underground |
| 09/18/2013 | CN203201559U Efficient mining structure suitable for footwall ore body of ore pillars in main mining area |
| 09/18/2013 | CN203201558U Cross intercommunication type large-conveying-capacity trackless mining channel |
| 09/18/2013 | CN103306677A Rapid rock cross-cut coal uncovering process and outburst prevention method |
| 09/18/2013 | CN103306676A Fully-mechanized hydraulic bracket ore drawing ellipsoid control device |
| 09/17/2013 | US8538698 Blasting method |
| 09/17/2013 | CA2526336C Method and apparatus for oil sands ore mining |
| 09/11/2013 | CN203189027U Digital intelligent ore extraction apparatus |
| 09/11/2013 | CN203189026U Solar ore extraction apparatus |
| 09/11/2013 | CN203189024U Fluorescent lighting-type ore extraction equipment |
| 09/11/2013 | CN203189022U High-pressure hydraulic pulse-type ore extraction apparatus |
| 09/11/2013 | CN203189021U Low-voltage direct current type ore mining equipment |
| 09/11/2013 | CN203189020U Mining device for working face of thin coal seam |
| 09/11/2013 | CN103291305A Quick and low-cost artificial fake roof construction method for ground mine |
| 09/11/2013 | CN103291304A Recovery method of super mining height top coal on fully mechanized coal mining face |
| 09/11/2013 | CN103291303A Mining method of settled strip coal pillars |
| 09/11/2013 | CN103291302A Mining method based on bottom-column-free filling method |
| 09/11/2013 | CN103291301A Pilot-tunneling method for coal uncovering |
| 09/11/2013 | CN102392641B Point pillar type full-ore-deposit middle-section-free upward high-layering continuous propelling fill mining method |
| 09/10/2013 | US8528988 Milling machine, in particular surface miner, and method for mining milled material of an open cast surface |
| 09/04/2013 | CN103277102A Slope toe reinforcement method for artificial boundary pillars during transition from open-pit mining to underground mining |
| 08/28/2013 | CN203161233U Hydraulic control ore extraction equipment |
| 08/28/2013 | CN203161232U Ore extraction equipment with coating |
| 08/28/2013 | CN203161231U Navigation-type ore extraction apparatus |
| 08/28/2013 | CN203161230U Centrifugal-type ore extraction equipment |
| 08/28/2013 | CN203161228U Energy-saving ore extraction apparatus |
| 08/28/2013 | CN203161225U Filtration-assisted ore extraction apparatus |
| 08/28/2013 | CN203161224U Constant-temperature ore extraction apparatus |
| 08/28/2013 | CN203161221U Electromagnetic ore extraction apparatus |
| 08/28/2013 | CN203161220U Water-flush salt mine exploiting device |
| 08/28/2013 | CN203161219U Complete equipment for underground dirt band coal layer mining and transporting separated gangue backfilling method |
| 08/28/2013 | CN103266893A Application of non-coal-pillar coal mining method in under-protected stratum exploitation |
| 08/28/2013 | CN103264015A Gravity screening winze device and construction method thereof |
| 08/21/2013 | CN103256050A Coal mining method of triangle fully mechanized caving face |
| 08/21/2013 | CN103256049A Coal drilling unit for comprehensive mechanized coal mining |
| 08/21/2013 | CN103256048A Mining method of coal drilling unit for comprehensive mechanized coal mining |
| 08/21/2013 | CN102505943B Water conservation coal cutting method for small and medium-sized coal mines in waterhead area |
| 08/21/2013 | CN102261247B Secondary coal-mining method for reversely filling paste in stripes |
| 08/20/2013 | US8511756 Continuous surface mining system |
| 08/20/2013 | US8511372 Method and system for accessing subterranean deposits from the surface |
| 08/14/2013 | CN103249912A A method of sorting ore |
| 08/14/2013 | CN103244179A Assessment method for predicting underground rock burst danger of coal mine |
| 08/14/2013 | CN103244124A Method for coal mine tunnel working surface to pass through abandoned roadway in forced caving pressure relief mode |
| 08/14/2013 | CN103244123A High-dipping medium thick ore body mining method |
| 08/14/2013 | CN103244122A Trinity coupling support stability control method for gob-side entry-driving coal pillar |