| Patents for E21C 41 - Methods of underground or surface mining; Layouts therefor (2,789) |
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| 04/19/2007 | US20070085409 Method and means for processing oil sands while excavating |
| 04/19/2007 | US20070084555 Apparatus for and method of lining passageways |
| 04/17/2007 | CA2176100C Method of removing a minable product from an underground seam |
| 04/12/2007 | WO2007039669A1 Method of driving plurality of mine vehicles in mine, and transport system |
| 03/28/2007 | CN1936271A Method for filling coal-steam-free extraction working surface goaf by coal mine waste rock |
| 03/21/2007 | CN1932241A Panel unloading and loading hig slicing filling mining method |
| 03/21/2007 | CN1932240A Full-seam cutting, retreating, separate moving and full-caving comprehensive mechanized coal mining method and equipment |
| 03/20/2007 | US7192092 Method and means for recovering hydrocarbons from oil sands by underground mining |
| 03/07/2007 | EP1759088A1 Method, apparatus and computer program for scheduling the extraction of a resource and for determining the net present value of an extraction schedule |
| 03/01/2007 | DE102005040272A1 Pillar retreating method for use during digging e.g. coal, in underground layer-like deposits, involves supporting inclination end with construction units before retreating face of extraction unit |
| 02/28/2007 | CN1920255A Method for pillar recovery in chamber-and-pillar working and tubbing unit for pillar recovery |
| 02/08/2007 | WO2007014410A1 Base for a drilling device |
| 02/08/2007 | WO2007014407A1 Method and device for mining subsurface deposits |
| 02/08/2007 | CA2617435A1 Starter car for a drilling device |
| 02/08/2007 | CA2617392A1 Method and device for mining underground deposits |
| 02/07/2007 | CN2866814Y Merging double-saw mining quarrying machine |
| 01/31/2007 | CN1904313A Concrete pole top protection mining method |
| 01/25/2007 | DE19737936B4 Abbaueinrichtung für den Untertagebergbau, insbesondere für die Kohlegewinnung in Strebbetrieben Mining equipment for underground mining, especially for coal mining in longwall operations |
| 01/04/2007 | DE102005013062A1 Control method for buttressing work across a preset face-advance surface uses buttressing with a means of output and a conveyor linked to a self-advancing support |
| 01/03/2007 | CN1888390A High gas yoke thick coal seam quasi-large-scale mining and high comprehensive mining low-level caving technique |
| 01/03/2007 | CN1888389A Slitting type cutting coal-mining method capable of raising lump-coal yield and special large intercept coal-cutting drum |
| 12/27/2006 | CN1886635A Method of blasting multiple layers or levels of rock |
| 12/21/2006 | DE102005026582A1 Process to remove unstable soil or rock from a hillside or mountainside by drilling bore hole from remote site and subsequent explosion |
| 12/20/2006 | EP1276969B1 Mining machine and method |
| 11/30/2006 | US20060265914 Work machine having boundary tracking system |
| 11/29/2006 | CN1869403A Safety coal mining and gas production method with separated air way |
| 11/23/2006 | US20060265342 System and method(s) of blended mine planning, design and processing |
| 11/22/2006 | CN1865657A Comprehensive coal-mining process by using long wall mining method |
| 11/16/2006 | WO2005106137A3 Excavation apparatus and method |
| 11/08/2006 | CN1858402A Comprehensive coal mining method |
| 11/08/2006 | CN1858401A Coal mining process including prop type mining and prop recovery |
| 10/31/2006 | US7128375 Method and means for recovering hydrocarbons from oil sands by underground mining |
| 10/31/2006 | CA2451712C In situ sulphur remelter |
| 10/19/2006 | WO2006108213A1 Mining optimisation |
| 10/19/2006 | CA2602959A1 Mining optimisation |
| 10/18/2006 | CN1847616A Tail ore stock area structure with sewage percolation and resource regeneration |
| 10/18/2006 | CN1847615A Rude ore mining method for ion type RE ore |
| 09/28/2006 | US20060213657 In situ thermal processing of an oil shale formation using a pattern of heat sources |
| 09/28/2006 | DE19736662B4 Abbaueinrichtung für den Untertagebergbau Mining equipment for underground mining |
| 09/27/2006 | CN1837577A Technological process for bauxite stripping, mining and land reclaimation |
| 09/21/2006 | DE102006011042A1 Method for coal extraction |
| 09/06/2006 | CN1828018A Ribbed terrace method for wet type stack of fine tailings |
| 09/06/2006 | CN1828017A W trench type ore-gathering tunnel with bottom structure and forming process thereof |
| 08/29/2006 | US7097255 Method and means for processing oil sands while excavating |
| 08/24/2006 | US20060190219 System and method(s) of mine planning, design and processing |
| 08/16/2006 | CN1818339A Topper-line externally hollowed-out coal extraction on foot ridding |
| 08/16/2006 | CN1818338A Caving step-distance determination by non-base column sectional ore-caving mining method |
| 08/09/2006 | EP1687584A1 Method of blasting multiple layers or levels of rock |
| 08/02/2006 | CN1811129A Walking and bridging inner transport passage for open cast coal mine |
| 08/01/2006 | CA2289269C Softwall mining method and device |
| 07/27/2006 | DE102005003560A1 Device for inlake conditioning of sour open mining lakes, comprises a conditioning agent, which is placed into a mixing containers, pumps and/or mobile hose pipe barrels |
| 07/19/2006 | CN2797633Y Jetting type cavity making tool |
| 07/19/2006 | CN1804374A Method for preventing and controlling impact geopressure in longwall face gate of coal mine |
| 07/05/2006 | CN2793327Y Manless coal cutter under well |
| 06/29/2006 | DE102004062780A1 Method for extraction and removal of soil and rock in deposits e.g. phosphate rock in phosphate deposits, in surface mining, involves forming of conveying equipment by conveyor, which is positioned on floor of deposits |
| 06/21/2006 | CN1260461C Continuous mining method of stepped sectional extruding and ore caving followed by filling |
| 06/21/2006 | CN1260460C Continuous mining process with deep hole dropping and top-bottom pillars mining in advance |
| 06/14/2006 | EP1287231A4 Apparatus for and method of lining passageways |
| 05/30/2006 | US7051811 In situ thermal processing through an open wellbore in an oil shale formation |
| 05/24/2006 | DE102005013017A1 Floating shaft lining safety device, has tube segments inserted into shaft, and outlet connection provided at base of pipe installation, where connection includes flat contact for filling of annular space |
| 05/24/2006 | CN1776196A Method and system for accessing subterranean deposits from the surface |
| 05/24/2006 | CN1776121A Small-sized ore loader for hole operation |
| 05/11/2006 | US20060096755 Method and system for accessing subterranean deposits from the surface |
| 05/09/2006 | US7040399 In situ thermal processing of an oil shale formation using a controlled heating rate |
| 05/09/2006 | US7040397 Thermal processing of an oil shale formation to increase permeability of the formation |
| 04/27/2006 | US20060087168 Hydrodemolition machine for inclined surfaces |
| 04/26/2006 | CN1763351A Four-control type comprehensive coal mining method |
| 04/25/2006 | US7032660 In situ thermal processing and inhibiting migration of fluids into or out of an in situ oil shale formation |
| 04/04/2006 | CA2363748C Heat added to underground cemented fill to obtain both early and long term strength increases |
| 03/29/2006 | CN1752411A Technique of mine flyash making thick liquid, delivering and injecting thick liquid |
| 03/29/2006 | CN1752410A Mining producing method for synchronous excavation and mining drift multiplying |
| 03/21/2006 | US7013972 Heat exchanging from one or more heat sources to specific locations to pyrolyze hydrocarbons at specific formations, to inhibit coking; efficiency |
| 03/21/2006 | US7013937 Apparatus and process for mining of minerals |
| 03/09/2006 | WO2006024097A1 Haulage system for pit mining |
| 03/09/2006 | DE202005019432U1 Arctic ice transporting arrangement for nuclear power station at ship, has mixer from which water-ice-mixture is supplied to compressor device and under water piping, which supplies mixture to distant consumers |
| 03/08/2006 | CN1745226A 开采系统 Mining system |
| 02/28/2006 | US7004251 Heating; recovering hydrocarbons, hydrogen |
| 02/28/2006 | US7004247 Conductor-in-conduit heat sources for in situ thermal processing of an oil shale formation |
| 02/22/2006 | CN1737335A Top plate control method of Wangeviry coal mining region |
| 02/22/2006 | CN1737334A Method for preventing top plate from large area collapsing |
| 02/22/2006 | CN1737333A Coal winning method by digging |
| 02/15/2006 | CN1734056A Forced river crossing method for fully mechanized coal mining face |
| 02/15/2006 | CN1734055A Sill-free sublevel caving method with drift space greater than sublevel height |
| 02/14/2006 | US6997518 In situ thermal processing and solution mining of an oil shale formation |
| 02/08/2006 | CN1730904A Induction caving method for disposing goaf |
| 02/07/2006 | US6994169 In situ thermal processing of an oil shale formation with a selected property |
| 02/01/2006 | CN1727636A Method and system for accessing subterranean deposits from the surface |
| 01/31/2006 | US6991033 pyrolysis of kerogens in wells to form mixtures of hydrocarbon oxidates, paraffins, hydrogen, and/or synthesis gas; process control |
| 01/31/2006 | US6991032 In situ thermal processing of an oil shale formation using a pattern of heat sources |
| 01/26/2006 | DE10008794B4 Verfahren zur Herstellung eines Bodenverbesserungsmittels für unfruchtbare Böden A method for producing a soil improvement agent for infertile soil |
| 01/25/2006 | EP1619352A1 Method and system for accessing subterranean deposits from the surface |
| 01/24/2006 | US6988775 Scrapping method of building and scrapping machine |
| 01/24/2006 | US6988591 Mine transportation management system and method using separate ore vessels and transport vehicles managed via communication signals |
| 01/19/2006 | DE102004030966A1 Multifunctional control of water quality in open watercourses, especially on open mining lakes and running water, involves introducing fine-grained alkaline material in embankment and/or dump regions in the relevant bed regions |
| 01/18/2006 | CN1723334A System and method(s) of mine planning, design and processing |
| 01/18/2006 | CN1723333A System and method(s) of blended mine planning, design and processing |
| 12/29/2005 | WO2005124104A1 Method, apparatus and computer program for scheduling the extraction of a resource and for determining the net present value of an extraction schedule |
| 12/29/2005 | CA2569655A1 Method, apparatus and computer program for scheduling the extraction of a resource and for determining the net present value of an extraction schedule |
| 12/20/2005 | US6976533 Method and system for accessing subterranean deposits from the surface |
| 12/20/2005 | CA2278735C Mining ultra thin coal seams |