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| Number | Title | Issue Date |
| 7377593 | Continous extraction of underground narrow-vein metal-bearing deposits by thermal rock fragmentation A method for extracting minerals from a narrow-vein deposit by thermal fragmentation is provided. The method includes locating the vein and determining the extent thereof to form the boundaries of a stope. Access to the stope is prepared by forming a panel having an... | 05/27/2008 |
| 7350874 | Method and device for extracting extraction products in underground mining In the method according to the invention and the arrangement or according to the invention for extracting extraction products in underground mining operations using the caving method, the extraction products (20) collapsing in an upper gate area (10) a... | 04/01/2008 |
| 7128375 | Method and means for recovering hydrocarbons from oil sands by underground mining The present invention is directed generally to the combined use of slurry mining and hydrocyclones to recover hydrocarbons, such as bitumen, from hydrocarbon-containing materials, such as oil sands, and to selective mining of valuable materials, particularly hydroca... | 10/31/2006 |
| 7097255 | Method and means for processing oil sands while excavating The present invention is directed to the separation of bitumen, such as by the Clark process or by a countercurrent de-sander, in an underground excavation machine, such as a tunnel boring machine. ... | 08/29/2006 |
| 7083375 | System and method for transporting and handling bulk quantities of bulk feed A system and method for handling and transporting moist bulk grain by-products include a rail car having an aluminum car body carried by a plurality of trucks for engaging rails. A flexible top cover, supported by a plurality of breakaway curved ribs, is positioned ... | 08/01/2006 |
| 7063283 | Enclosure for food processor An enclosure for a food processor having a lower portion for cooperating with a control and/or operational base assembly of a food processor, a central portion for holding matter to be processed, an upper portion with one or more openings for receiving the matter in... | 06/20/2006 |
| 6929330 | Method and system for mining hydrocarbon-containing materials The present invention is directed, inter alia, to devices and methods for excavating valuable materials, particularly soft ores such as oil sands, oil shales, and the like, that use one or more of a number of features, including backfilling for ground support, a sma... | 08/16/2005 |
| 6916071 | Mining system A method for extracting mineral deposits is provided. First, a predetermined surface is contour mined to expose a portion of a mineral seam and provide an insertion highwall between a pair of endwalls. Successive mining passes are made through the mineral seam to ex... | 07/12/2005 |
| 6869147 | Method and system for mining hydrocarbon-containing materials The present invention is directed, inter alia, to devices and methods for excavating valuable materials, particularly soft ores such as oil sands, oil shales, and the like, that use one or more of a number of features, including backfilling for ground support, a sma... | 03/22/2005 |
| 6857706 | Mining method for steeply dipping ore bodies The present invention is directed to a mining method for steeply dipping orebodies. In the method, an excavator 152 is tethered to a deployment system 120 by one or more cables/umbilicals 144. The excavator 152 excavates slices 172... | 02/22/2005 |
| 6851757 | Mining method A method of mining an underground ore body includes the steps of: excavating a plurality of laterally spaced first, ventilation tunnels in the ore body using an auger mining machine; excavating a plurality of laterally spaced second tunnels in the ore body, each sec... | 02/08/2005 |
| 6848748 | Mining system with drilling, loading, conveyor, and support The extraction machine for underground ore extraction operations, with extraction of the extraction product by blasting has an advancing support equipment (11) and a face conveyor (18) coupled to it as well as at least one boring device (26) for... | 02/01/2005 |
| 6817678 | Auger mining system A mining apparatus 10 to mine coal from a seam 11. The apparatus 10 includes a continuous miner 12 to form a mine road 13. Extending along the road 13 is a conveyor 15 having a forward end 20 to which the mined... | 11/16/2004 |
| 6796616 | Mining system A method for extracting mineral deposits. First, a predetermined surface is contour mined in a mineral seam, such as a mountain, to provide an elongate active mining area and a highwall. Next, a sealable intake and return canopy is placed at substantially opposing e... | 09/28/2004 |
| 6672674 | Longwall mining with blasting The extraction machine for underground ore extraction operations, with extraction of the extraction product by blasting has an advancing support equipment (11) and a face conveyor (18) coupled to it as well as at least one boring device (26) for the produ... | 01/06/2004 |
| 6607248 | Low elevation coal processing plant The present invention is to an improved method of constructing a coal processing plant and an improved arrangement therefore. The overall cost of constructing a coal processing plant can be significantly reduced by the arrangement of the processing to ter... | 08/19/2003 |
| 6554368 | Method and system for mining hydrocarbon-containing materials The present invention is directed, inter alia, to devices and methods for excavating valuable materials, particularly soft ores such as oil sands, oil shales, and the like, that use one or more of a number of features, including backfilling for ground sup... | 04/29/2003 |
| 6520591 | R.B. Jun's method of openwork mining utilizing pit wall consolidation The invention relates to the mining industry and can be used for working out mineral deposits, no matter what their thickness and dip angle are, and allows to reduce the volumes of overburden operations. The invention provides the working out the main res... | 02/18/2003 |
| 6497457 | Drilling, image, and coal-bed methane production ahead of mining A coal mining operation begins by using directional drilling to bore several horizontal shafts through a coal deposit with its natural overburden still intact. Any methane gas permeating the coal deposit is pumped out and preferably sold as natural gas to... | 12/24/2002 |
| 6474745 | Method of mining A method of mining using a pair of continuous mining machines 12 and an auger mining machine 16. The continuous mining machines form spaced longitudinal roads 10, 11, 13 and 14. Further longitudinal roads 17 are formed by the auger mining machine 16 with ... | 11/05/2002 |
| 6460937 | Method of longwall panel development A method of roadway development for longwall mining The method includes using a continuous mining machine (100) from which there rearwardly extends a conveyor (102). As the machine (100) progresses to form a road, the conveyor (102) extends. At the rear e... | 10/08/2002 |
| 5871260 | Mining ultra thin coal seams A continuous mining machine is provided for mining ultra thin coal seams, e.g. seams having a thickness of about 24 inches or less. A chassis supported by crawler tracks has a substantially horizontal axis powered cutter head mounted to its front and a co... | 02/16/1999 |
| 5782539 | Wall-to-wall surface mining process A mining process that consists of a combination of surface mining and underground mining techniques carried out in a novel extraction sequence. The coal seam is first mined by surface-mining stripping methods to produce a highwall. Roadways to a predeterm... | 07/21/1998 |
| 5769504 | Equipment for shortwall mining useful for extraction of pillars in underground coal mines Shortwall mining equipment for extraction of some pillars in an underground coal mine has a series of self-advancing powered roof supports (1) for placement along the pillars (2) under extraction, the pillars under extraction being located within a panel ... | 06/23/1998 |
| 5636903 | Mining system for removing overburden A mining system for removing overburden from a valuable mineral or coal deposit from a pit (9) is disclosed. The mining system comprises a dragline (600) for removing overburden from a high wall side (3) of the pit (9) to produce a properly formed high wa... | 06/10/1997 |
| 5427439 | Surface mining conveyor system A surface mining system for mining successive, generally parallel cuts in a coal or similar mineral seam includes at least one endless belt conveyor disposed on a spoil pile directly adjacent the cut being excavated and a second conveyor extending from th... | 06/27/1995 |
| 5409298 | Open cut mining apparatus An apparatus for removing overburden or for mining a mineral from a valuable mineral or coal deposit, such as in an open pit mine, is disclosed. The apparatus comprises a cross-pit vehicle which is adapted to move between the high wall and low wall sides ... | 04/25/1995 |
| 5265941 | Underground mining system and method for developing longwall panel An entry system for a longwall panel for the mining of coal and the like by a shearer-type cutter includes a single entryway developed by a boring type mining machine. Intake air and return air passageways are formed in the entryway by a mine stopping bet... | 11/30/1993 |
| 5199768 | Method for developing thick beds of minerals A method for developing thick beds of minerals accomplished by large-section rooms. The method comprising the preparation of the room for winning which includes providing a conveyor working below the soil of the room and extending for the entire length th... | 04/06/1993 |
| 5165757 | Method of strip mining A method of strip mining coal or other minerals by way of continuous-operation winning equipment with a cylindrical winning tool that excavates strips with a more or less rectangular section. The rectangle is approximately as wide as the tool and no highe... | 11/24/1992 |
| 5154489 | Inclined surface mining method There is disclosed a method of surface mining wherein a continuous surface miner is moved up and down an inclined surface to remove adjacent strips of material, which may be valuable commodity and/or waste, and the excavated material is transferred to a m... | 10/13/1992 |
| 5137337 | Method for working steeply dipping vein ores with vertically downwards propagating pillars The invention relates to a cut-and fill method of a mine, where the working is done by pillar working, which propagates vertically downwards. The working is done by placing the stope and the pillars interlaced with each other when propagating downwards. T... | 08/11/1992 |
| 5031963 | Method of downhole hydraulicking mineral resources A method of downhole hydraulicking mineral resources includes production panels being laid out at a deposit, holes being sunk in a longitudinal axis of each production panel, and device for hydraulicking mineral resources, comprising a monitor and a means... | 07/16/1991 |
| 5007683 | Method and equipment for narrow ore mining For narrow ore mining, shrinkage stopping is used with working equipment, such as a working platform or mining rig (30), which is suspended in guide sections (38) in the roof of the mining chamber, and from which drilling and charging is carried through, ... | 04/16/1991 |
| 4979781 | Bench mining method and apparatus A method and apparatus for bench mining employs a rotating wheel excavator with excavator wheel positioned outwardly to one side of a tractor unit for the excavator so that the tractor unit draws the excavation wheel along a bench line or cut line between... | 12/25/1990 |
| 4938536 | Conic mass caving structure and method Ore may be mined from an irregular ore body using a mining structure which conforms to the shape of the ore body, and which relieves stress that might otherwise hinder caving through bridging and compacting. The conic mass caving structure comprises a ser... | 07/03/1990 |
| 4836612 | Stress control mining method and apparatus A method and apparatus for mechanized, stress control mining includes the process of continuously cutting and advancing a broad mine face to form a mine opening having a low aspect ratio and an envelope of ambient stresses in the earthen media that protec... | 06/06/1989 |
| 4799738 | Mining method for working large-scale mineral deposits by the caving system The mining method of this invention is particularly suitable for the underground extraction of large mineral deposits, wherein a subsidiary road is formed perpendicularly to the work face from which the mineral deposit is to be removed. A boundary subsidi... | 01/24/1989 |
| 4673218 | Tunnel excavation method A method of excavating a tunnel in bedrock, including the steps of boring an outer peripheral slot in the bedrock, boring a plurality of horizontal slots in a bedrock section surrounded by the outer peripheral slot such that the bedrock section is divided... | 06/16/1987 |
| 4624504 | Method of excavating overburden in surface mining operations In the removal of the overburden prior to surface mining of minerals in an elongated pit, one or more first excavating machines remove the overburden along one elongated part of the pit and direct the removed material via a cross-pit transporter across th... | 11/25/1986 |
