| Patents for E21C 41 - Methods of underground or surface mining; Layouts therefor (2,789) |
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| 04/24/2003 | US20030075970 Mining machine and method |
| 04/23/2003 | CN1412416A Working face J-type ventilating system |
| 04/23/2003 | CN1412414A Method for explosion opening and fracturing closing salt layer and its equipment |
| 04/16/2003 | CN1410656A Carry scraper whole cross section mining method |
| 04/16/2003 | CN1410655A Coordinative type full mining method of pressed coal under building or construction |
| 04/01/2003 | CA2361361C Method of operating a quarry area |
| 03/25/2003 | CA2100328C Method of microbial enhanced oil recovery |
| 03/18/2003 | US6532874 Method of blasting bench of rock with improved blasting efficiency and reduced blasting nuisance |
| 03/06/2003 | US20030042784 Highwall mining system |
| 03/05/2003 | EP1287231A1 Apparatus for and method of lining passageways |
| 02/27/2003 | US20030038526 Method and system for mining hydrocarbon-containing materials |
| 02/20/2003 | US20030036851 Method of roof instability rating |
| 02/19/2003 | CN1397718A Palnt growing soil and method for redaiming quarry with it |
| 02/19/2003 | CN1397717A Hydraulic coal mining method without underground drilling |
| 02/18/2003 | US6520591 R.B. Jun's method of openwork mining utilizing pit wall consolidation |
| 02/12/2003 | CN1396982A Mining machine and method |
| 02/12/2003 | CN1101515C Ming method ultilizing substituting isolating roof |
| 02/11/2003 | CA2358805C Process and apparatus for recovering an oil-enriched product from an oil-bearing material |
| 02/06/2003 | US20030025381 Sulfur storage method and system |
| 01/30/2003 | US20030019383 Method of blasting bench of rock with improved blasting efficiency and reduced blasting nuisance |
| 01/22/2003 | EP1276969A1 Mining machine and method |
| 01/22/2003 | CN1392329A Fast afforestation method for vertical surface of stone pit |
| 01/14/2003 | US6505892 Softwall mining method and device |
| 01/04/2003 | CA2352274A1 Oil sand spiral surface mining apparatus |
| 12/19/2002 | WO2002101196A1 A method of excavating a hard material body |
| 11/12/2002 | US6478085 System for accessing subterranean deposits from the surface |
| 11/07/2002 | WO2002077414A9 An excavation method |
| 11/05/2002 | US6474745 Method of mining |
| 10/31/2002 | WO2002086018A2 In situ recovery from a oil shale formation |
| 10/24/2002 | US20020154955 Apparatus for transporting particulate materials from a lower level to a higher level |
| 10/23/2002 | CN1375681A Energy-saving demolition mining method adopting columnar cartridge |
| 10/23/2002 | CN1375680A Rock stepped blasting method of increasing blasting efficiency and reducing blasting damage |
| 10/17/2002 | US20020148647 Method and system for accessing subterranean deposits from the surface |
| 10/17/2002 | US20020148613 Method and system for accessing subterranean deposits from the surface |
| 10/17/2002 | US20020148605 Method and system for accessing subterranean deposits from the surface |
| 10/10/2002 | CA2343617A1 Recovery for the restoration of mining residue parks |
| 10/09/2002 | CN1373286A Mining method by cutting ore breakdown and dry filling artificial ore pillars |
| 10/08/2002 | US6460937 Method of longwall panel development |
| 10/03/2002 | WO2002077414A1 An excavation method |
| 09/26/2002 | US20020134546 Method and system for accessing subterranean deposits from the surface |
| 09/25/2002 | EP0812240B1 Screening device and apparatus including same |
| 09/18/2002 | EP1162345A4 R. b. yun's method for the exploitation of open-air mining fields |
| 09/10/2002 | CA2060288C Non-exposive mining |
| 08/27/2002 | US6439320 Wellbore pattern for uniform access to subterranean deposits |
| 08/14/2002 | CN2505595Y Underground sandy gravel mining equipment |
| 08/06/2002 | US6428245 Method of and apparatus for transporting particulate materials from a lower level to a higher level |
| 07/25/2002 | US20020096934 Mining machine and method of mining |
| 07/11/2002 | WO2001053658A8 Method and devices for preventing rock bursts, especially for use in underground works |
| 07/09/2002 | US6416134 Underground auger system |
| 06/26/2002 | CN1355374A Advanced grid anchored minerless mining method for coal mine |
| 06/20/2002 | US20020074849 Extraction machine for underground ore extraction operations and a method of extracting output products in underground ore extraction operations |
| 06/19/2002 | CN1354318A Slice coal-mining technique from sharp inclined loose thick coal layer to longwall inclination |
| 06/13/2002 | WO2001088337A3 Underground mining method |
| 05/16/2002 | DE19831234C2 Verfahren und Vorrichtung zur Aussolung geneigter Lagerstätten Method and apparatus for brining inclined deposits |
| 04/04/2002 | DE10046497A1 Ore mining equipment with powered support and conveyor uses demountably fitted drill and loader on unit riding face conveyor plus fitted blast shields and guard waste-side of conveyor with sealable drawhole in support canopy. |
| 04/04/2002 | DE10044261A1 Device, for stabilizing environment with flooding of residual open-cast mining holes with alkaline surface water, has in slagheap region in groundwater flow direction in front of water to be protected, device for entry of alkaline liquid |
| 04/02/2002 | US6364418 Cutting heads for horizontal remote mining system |
| 04/02/2002 | US6364119 Screening device and apparatus including same |
| 03/19/2002 | US6357523 Drainage pattern with intersecting wells drilled from surface |
| 03/14/2002 | US20020030398 Method and system for mining hydrocarbon-containing materials |
| 03/14/2002 | DE10122122A1 Massive conveying plant for open cast mining, comprises inclined, steel rope-reinforced conveyor belt, with platform capable of raising extreme loads |
| 02/26/2002 | CA2332207E Process and apparatus for recovering an oil-enriched product from an oil-bearing material |
| 01/30/2002 | CN1333858A Method and system for accessing substerranean deposits from the surface |
| 01/23/2002 | CN1078301C All thickness coal mining method for seam misplaced coal tunnel distribution on high seam |
| 01/17/2002 | US20020005660 Method of mining |
| 01/10/2002 | WO2002002909A1 Softwall mining method and device |
| 01/10/2002 | CA2430662A1 Softwall mining method and device |
| 01/08/2002 | US6336684 Control system for overburden discharge |
| 12/12/2001 | EP1162345A1 R. b. yun's method for the exploitation of open-air mining fields |
| 11/22/2001 | WO2001088338A1 Apparatus for and method of lining passageways |
| 11/22/2001 | WO2001088337A2 Underground mining method |
| 11/22/2001 | DE10023993A1 Conveyor unit has shaft with top and bottom parts, pulley-belt, steel cables, drive drum as deflector, platform, and counterweight |
| 11/22/2001 | CA2446198A1 Apparatus for and method of lining passageways |
| 11/22/2001 | CA2409848A1 Underground mining method |
| 11/21/2001 | CN1075155C Method for optimizing pisitioning of working face, especially in hard coal seams |
| 11/01/2001 | WO2001081726A1 Mining machine and method |
| 10/18/2001 | WO2001077492A1 Apparatus for assembling a liner |
| 10/18/2001 | DE19631520C2 Verfahren und Anlage zur soltechnischen Gewinnung von Evaporiten und Aufbereitung von Salzlösungen Process and apparatus for the solution mining of evaporites and preparation of salt solutions |
| 10/18/2001 | CA2628887A1 Apparatus for assembling a liner |
| 10/17/2001 | CN1318129A Mining machine and mining method |
| 10/09/2001 | US6299256 Method and apparatus for recovering a gas from a gas hydrate located on the ocean floor |
| 09/26/2001 | CN1314540A Man controlled falling technical method for top coal in mining area |
| 09/25/2001 | US6293628 Hydraulic scroll auger mining system and method of using the same |
| 09/20/2001 | WO2001069042A1 Method and system for mining hydrocarbon-containing materials |
| 09/12/2001 | EP1131535A2 Method and system for accessing subterranean deposits from the surface |
| 08/29/2001 | CN1310285A Technological method of raising exploitation efficiency in work area of coal mine |
| 08/29/2001 | CN1310284A Gypsum ore deposit mining method to mining overall height in one single process |
| 08/28/2001 | US6280000 Method for production of gas from a coal seam using intersecting well bores |
| 08/23/2001 | US20010015574 Method and system for accessing subterranean deposits from the surface |
| 08/22/2001 | CN1069946C Method for minerless mining on near water-level very thin coal seam |
| 08/21/2001 | US6276758 Surface miner with tilting superstructure for depth control |
| 08/07/2001 | US6270163 Mining machine with moveable cutting assembly and method of using the same |
| 08/02/2001 | US20010010432 Method and system for accessing subterranean deposits from the surface |
| 07/26/2001 | WO2001053658A2 Method and devices for preventing rock bursts, especially for use in underground works |
| 07/05/2001 | US20010006304 Method of mining |
| 07/05/2001 | DE19961243A1 Process for de-acidifying of lakes from mining and open-cast mining after closing of the mines |
| 07/04/2001 | CN1301910A 漏斗式采煤法 Funnel mining method |
| 07/04/2001 | CN1068091C Method for determination of reasonable mining width under strip coal layer |
| 06/27/2001 | CN1067509C Method of cultivation of coal and lignite infields formed by uncovering (open cast mining) |
| 05/16/2001 | CN1065945C Fragment openstope mining method with wave like bottom column |