| Patents for E21C 41 - Methods of underground or surface mining; Layouts therefor (2,789) |
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| 05/25/2004 | CA2331181C Method for the exploitation of open-air mining fields |
| 05/25/2004 | CA2295230C Method for the combined exploitation of mining fields |
| 05/11/2004 | US6732792 Multi-well structure for accessing subterranean deposits |
| 05/05/2004 | CN1493770A Open pit mine regular inclined mining method |
| 04/22/2004 | WO2004033854A1 System and method(s) of blended mine planning, design and processing |
| 04/22/2004 | WO2004033853A1 System and method(s) of mine planning, design and processing |
| 04/22/2004 | CA2501844A1 System and method(s) of blended mine planning, design and processing |
| 04/22/2004 | CA2501840A1 System and method(s) of mine planning, design and processing |
| 04/15/2004 | US20040070257 Method and system for mining hydrocarbon-containing materials |
| 04/14/2004 | CN1488820A Plant-securing technique for vegetation recovery for stone pit slope |
| 04/07/2004 | CN2610087Y Lower design of critical large dip angle super high seam top-coal caving face |
| 03/24/2004 | CN1483921A Cavern filling type coal mining method |
| 03/17/2004 | CN1482343A Continuous miner house column type short arm mechanized coal mining process and support equipment thereof |
| 03/10/2004 | EP1162345B1 R. b. yun's method for the exploitation of open-air mining fields |
| 03/10/2004 | CN1480812A Mining transportation management system and method thereof |
| 03/04/2004 | US20040040792 Mine transportation management system and method |
| 03/04/2004 | DE4202246B4 Gewinnungseinrichtung Obtaining means |
| 02/19/2004 | WO2004015244A1 Method of barge mining oil sands |
| 02/19/2004 | US20040031609 Method and system for accessing subterranean deposits from the surface |
| 02/12/2004 | CA2397574A1 Method of barge mining tar sands |
| 02/11/2004 | CN1474032A Continuous mining method of stepped sectional extruding and ore caving followed by filling |
| 02/10/2004 | US6688702 Borehole mining method |
| 02/10/2004 | US6688388 Method for accessing subterranean deposits from the surface |
| 02/10/2004 | CA2350504C Method and system for accessing subterranean deposits from the surface |
| 01/28/2004 | CN1470740A Big-interval bottom-column-free sectional caving stoping method |
| 01/28/2004 | CN1136379C Advanced grid anchored minerless mining method for coal mine |
| 01/21/2004 | CN1469029A Coal cutting method for inclined thick and very thick coal bed |
| 01/15/2004 | WO2002086018A3 In situ recovery from a oil shale formation |
| 01/14/2004 | EP0980464B1 Softwall mining method and device |
| 01/14/2004 | CN2599274Y Pump box for coal-mining machine |
| 01/08/2004 | WO2004003344A1 Mining system |
| 01/07/2004 | CN1465848A Coal mining adopting 3.55m monocolumn three-two row pipe burying top board method |
| 01/07/2004 | CN1133794C Leaning loss free exploitation technology for underground high-grade thick ore obdy by steel rope net isolation method |
| 01/06/2004 | US6672798 Sulfur storage system |
| 01/06/2004 | US6672674 Longwall mining with blasting |
| 01/06/2004 | US6672673 Ore pass inspection system |
| 01/01/2004 | US20040000810 Mining system |
| 01/01/2004 | US20040000809 Mining system |
| 12/31/2003 | CN2596013Y Driving face explosive machine |
| 12/30/2003 | US6668918 Method and system for accessing subterranean deposit from the surface |
| 12/17/2003 | CN1131368C Mining method by cutting ore breakdown and dry filling artificial ore pillars |
| 12/03/2003 | CN1129703C Method of raising exploitation efficiency in work area of coal mine |
| 11/26/2003 | CN1458390A Roof bolt protection and sectioned empty field method for phosphorate rock mining |
| 11/25/2003 | US6652035 Highwall mining system |
| 11/19/2003 | CN1456788A Continuous mining process with deep hole dropping and top-bottom pillars mining in advance |
| 11/13/2003 | US20030209348 Heating; recovering hydrocarbons, hydrogen |
| 11/06/2003 | WO2003060285A3 Method and means for processing oil sands while excavating |
| 11/05/2003 | CN1126860C Mining method for once-mining overall height of gypsum ore deposit |
| 10/22/2003 | CN1450249A Mining method |
| 10/21/2003 | US6634832 Apparatus for transporting particulate materials from a lower level to a higher level |
| 10/21/2003 | CA2040716C Mine shaft sinking |
| 10/01/2003 | CN1445435A Method for optimizing parameters to increase per unit area yield of working face |
| 09/18/2003 | US20030173819 Mining method for steeply dipping ore bodies |
| 09/18/2003 | US20030173080 Heat sources positioned within the formation in a selected pattern raise a temperature of a portion of the formation to a pyrolysis temperature. |
| 09/18/2003 | US20030173078 In situ thermal processing of an oil shale formation to produce a condensate |
| 09/11/2003 | US20030168903 Mining method |
| 09/04/2003 | US20030164239 In situ thermal processing of an oil shale formation in a reducing environment |
| 08/28/2003 | US20030160500 Method and means for processing oil sands while excavating |
| 08/28/2003 | US20030159776 Apparatus for and method of lining passageways |
| 08/20/2003 | CN1437675A Apparatus for and method of lining passageways |
| 08/14/2003 | US20030151297 Apparatus for assembling a liner |
| 08/07/2003 | US20030148894 In situ thermal processing of an oil shale formation using a natural distributed combustor |
| 08/07/2003 | US20030146655 Extraction machine for underground ore extraction operations and a method of extracting output products in underground ore extraction operations |
| 08/07/2003 | US20030146002 Removable heat sources for in situ thermal processing of an oil shale formation |
| 07/31/2003 | US20030142964 In situ thermal processing of an oil shale formation using a controlled heating rate |
| 07/31/2003 | US20030141068 In situ thermal processing through an open wellbore in an oil shale formation |
| 07/31/2003 | US20030141067 In situ thermal processing of an oil shale formation to increase permeability of the formation |
| 07/31/2003 | US20030141066 In situ thermal processing of an oil shale formation while inhibiting coking |
| 07/24/2003 | WO2003060285A2 Method and means for processing oil sands while excavating |
| 07/24/2003 | US20030137181 In situ thermal processing of an oil shale formation to produce hydrocarbons having a selected carbon number range |
| 07/24/2003 | US20030136559 In situ thermal processing while controlling pressure in an oil shale formation |
| 07/24/2003 | US20030136558 In situ thermal processing of an oil shale formation to produce a desired product |
| 07/23/2003 | EP1276969A4 Mining machine and method |
| 07/17/2003 | WO2003058032A1 Longwall mining method and apparatus |
| 07/17/2003 | US20030132659 Sulfur storage system |
| 07/17/2003 | US20030131996 In situ thermal processing of an oil shale formation having permeable and impermeable sections |
| 07/17/2003 | US20030131994 Heat from the heat sources and the vaporized recovery fluid pyrolyzes at least some hydrocarbons within the selected section; produced gas mixture may include hydrocarbons with an average API gravity greater than 25 degrees |
| 07/17/2003 | US20030131993 Heat from the heat sources and the vaporized recovery fluid pyrolyzes at least some hydrocarbons within the selected section; produced gas mixture may include hydrocarbons with an average API gravity greater than 25 degrees |
| 07/10/2003 | WO2003056134A1 Apparatus and process for mining of minerals |
| 07/09/2003 | CN1429310A Underground mining method |
| 06/24/2003 | US6582025 Sulfur storage method |
| 06/19/2003 | WO2003050391A2 Mining method for steeply dipping ore bodies |
| 06/19/2003 | US20030111223 Control the heat exchanging, pyrolyzing hydrocarbons, enhancing oil recovery |
| 06/19/2003 | CA2469578A1 Mining method for steeply dipping ore bodies |
| 06/18/2003 | CN1424489A Method for constructing steel bar concrete bottom pillars for space mining process for middle thick mine body |
| 06/18/2003 | CN1424488A Method for constructing artificial pillars made of binded two materials |
| 06/18/2003 | CN1424487A Filled mining method |
| 06/18/2003 | CN1424486A Method for mining underground carnallite |
| 06/11/2003 | CN1423032A Mining method for multilayer ore body of underground metal mine |
| 06/04/2003 | EP1316673A2 Method and system for accessing subterranean deposits from the surface |
| 06/04/2003 | CN1421592A Vertically spaced digging process |
| 05/30/2003 | WO2003044322A1 Open-cut mining method for developing mineral resources and device for carrying out said method |
| 05/15/2003 | DE19931969C2 Mittel zur Reduzierung der Verluste bei der Aufnahme und Zwischenförderung gelösten Gutes für ein Tagebaugewinnungsgerät Means of reducing the losses in the admission and intermediate transport dissolved good for a surface mining equipment |
| 05/13/2003 | US6561288 Method and system for accessing subterranean deposits from the surface |
| 05/08/2003 | DE20302907U1 Disused open cast mine flooding unit, comprises flooding or siphon pipe with large area distribution system at outlet region |
| 05/07/2003 | CN1415842A Method for exploiting soluble salt mine through dissolution method of single well |
| 05/07/2003 | CN1415841A Drilling method for exploiting soluble salt mine through dissolution method |
| 05/01/2003 | US20030080604 In situ thermal processing and inhibiting migration of fluids into or out of an in situ oil shale formation |
| 04/29/2003 | US6554368 Method and system for mining hydrocarbon-containing materials |
| 04/24/2003 | WO2003033991A1 Method for carrying out drilling and blasting in watered masses |