| Patents for E21C 41 - Methods of underground or surface mining; Layouts therefor (2,789) |
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| 12/02/2009 | CN100564803C Rock lane digging method |
| 11/25/2009 | CN101586461A Method for recycling single-drum shearer short-wall comprehensive mechanical coal pillar |
| 11/25/2009 | CN101586460A Coal mining solid filling method |
| 11/25/2009 | CN100562646C Fully mechanized top coal roof multiple segment control exploration method for deeply inclined coal seam |
| 11/18/2009 | CN100560937C Thin basic rock shallow buried coal seam longwall face water-retaining mining method |
| 11/18/2009 | CN100560936C Method for coal mine downhole reproduction and back production |
| 11/11/2009 | CN201344034Y Multifunctional underground bottom cleaning machine |
| 11/10/2009 | US7614278 Blast movement monitor |
| 10/30/2009 | CA2629605A1 Method for the induction of fractures in mining materials |
| 10/29/2009 | WO2009098294A3 Milling machine, in particular surface miner, and method for mining milled material of an open cast surface |
| 10/28/2009 | CN101566062A Caving mining method cap comminution granulation |
| 10/28/2009 | CN100554642C Long-wall fully mechanized reclaiming room-type coal column mining method |
| 10/21/2009 | CN100552185C Concrete pole top protection mining method |
| 10/20/2009 | CA2583523C Method and system for mining hydrocarbon-containing materials |
| 10/15/2009 | US20090256412 Scanning system for 3d mineralogy modelling |
| 10/14/2009 | CN101557452A Scanning system for 3d mineralogy modelling |
| 10/14/2009 | CN101555796A Opencast combined mining method of steeply inclined coal seam groups |
| 10/14/2009 | CN101555795A Method for preventing flying refuse during large-inclination-angle coal bed mining |
| 10/08/2009 | US20090250380 Methods of transporting heavy hydrocarbons |
| 10/06/2009 | US7597401 Non-motorized gold mining apparatus |
| 09/24/2009 | US20090236899 Leach recovery of oil from oil sands and like host materials |
| 09/23/2009 | CN101539020A Upward cut-and-fill mining method |
| 09/23/2009 | CN100543267C Rude ore mining method for ion type RE ore |
| 09/17/2009 | US20090230755 Method and Device for Mining Subsurface Deposits |
| 09/16/2009 | CN100540846C Forced river crossing method for fully mechanized coal mining face |
| 09/10/2009 | DE102007032582B4 Reihendruckluftantriebssystem und System zur Speicherung und Wiedergewinnung von Energie Series pneumatic drive system and system for storing and recovering energy |
| 09/10/2009 | DE102005013062B4 Verfahren zum Steuern einer Strebausrüstung in Betrieben des untertätigen Steinkohlenbergbaus Method for controlling a longwall equipment in companies operating under the coal industry |
| 09/09/2009 | CN101526001A Comprehensive mining opposite-pull working face coal excavating process for thin coal bed |
| 09/03/2009 | US20090218876 Method of achieving hydraulic control for in-situ mining through temperature-controlled mobility ratio alterations |
| 09/02/2009 | CN101519966A Method for comprehensively treating ecological environment of coal gangue hill |
| 09/02/2009 | CN101519965A Method and device for exploiting stone |
| 09/02/2009 | CN101519964A Novel coal mining method |
| 09/02/2009 | CN100535389C Mining method of potassium salt magnesium vanadium salt mine |
| 09/02/2009 | CN100535388C Method for preventing top plate from large area collapsing |
| 09/02/2009 | CN100535387C Improved sublevel caving method without bottom column |
| 09/02/2009 | CN100535386C Coal winning method by digging |
| 09/01/2009 | CA2583513C Method and system for mining hydrocarbon-containing materials |
| 08/30/2009 | CA2713937A1 A method and an apparatus for mining a material in an underground environment |
| 08/27/2009 | WO2009103308A1 Method for controlling longwall mining operations, taking into account air and air conditioning resources |
| 08/27/2009 | WO2009103307A1 Method for automatically creating a defined face opening in longwall coal mining operations |
| 08/27/2009 | WO2009103305A1 Method for controlling longwall mining operations by identifying boundary layers |
| 08/27/2009 | WO2009103304A1 Method for the controlled maintaining of a distance between the roof and the face in longwall mining operations |
| 08/27/2009 | US20090212216 Mining methods and apparatus |
| 08/26/2009 | CN101516772A Transportation of sulphur from solid sulphur deposits, in blocks of large dimensions |
| 08/26/2009 | CN101514630A Plate-type ore-drawing collapse mining method |
| 08/20/2009 | DE102007028812B4 Selbstfahrende Maschine zum Schneiden oder Fräsen, insbesondere Maschine zur Ausbeutung von Lagerstätten im Tagebaubetrieb Self-propelled machine for cutting or milling machine especially for the exploitation of minerals in open pit mining |
| 08/19/2009 | CN101509491A Special long shaft underwater halogen transmitting pump |
| 08/19/2009 | CN101509378A Shallow buried thin bedrock coal bed short wall continuous mining technology suitable condition classification method |
| 08/19/2009 | CN101509377A High-dipping ore block house column mining method |
| 08/19/2009 | CN100529328C Mining producing method for synchronous excavation and mining drift multiplying |
| 08/13/2009 | WO2009098294A2 Milling machine, in particular surface miner, and method for mining milled material of an open cast surface |
| 08/13/2009 | WO2009097646A1 A method and an apparatus for mining a material in an underground environment |
| 08/13/2009 | US20090200855 Manually Rotatable Tool |
| 08/13/2009 | US20090200854 Solution mining and in situ treatment of nahcolite beds |
| 08/12/2009 | CN101503959A Gob-side entry retaining support method |
| 08/06/2009 | DE102008007169A1 Mine for use with equipment for use as power plant, power plant requirement or pump water power plant, has water pipeline system and water reservoir for water retention for water supply for electricity production by hydraulic power |
| 08/05/2009 | CN101498225A U+I type ventilating system for top-coal caving face |
| 08/05/2009 | CN101498216A Thick coal seam large height workface step coal wall coal mining method |
| 08/05/2009 | CN100523433C Tail ore stock area structure with sewage percolation and resource regeneration |
| 08/05/2009 | CN100523432C Mining system |
| 08/04/2009 | CA2404610C Apparatus for assembling a liner |
| 07/30/2009 | DE102008009669A1 Anlage zum Transportieren einer Erzpulpe in einem entlang einer Gefällstrecke angeordneten Leitungssystem sowie Komponenten einer solchen Anlage System for transporting a ore pulp in a along a slope arranged piping and components of such a system |
| 07/29/2009 | CN100519988C Mining machine and mining method |
| 07/22/2009 | CN101487392A House pillar type coal mining method |
| 07/14/2009 | CA2499840C Self clearing crusher flowsheet |
| 07/09/2009 | US20090174252 Tip for an earth working roll |
| 07/02/2009 | WO2009079686A1 Method for producing a lignite product |
| 07/01/2009 | CN101469612A Mining method for segmented metallic ore |
| 06/25/2009 | WO2009051678A3 Systems and methods for designing a haul road |
| 06/24/2009 | CN100504028C W trench type ore-gathering tunnel with bottom structure and forming process thereof |
| 06/23/2009 | CA2589332C Method and system for accessing subterranean deposits from the surface |
| 06/17/2009 | CN101457645A Thick coal seam stepwise full-seam coal mining method |
| 06/10/2009 | CN100497886C Coal mining process including prop type mining and prop recovery |
| 06/04/2009 | WO2008155654A3 Hydrocarbon recovery drill string apparatus, subterranean hydrocarbon recovery drilling methods, and subterranean hydrocarbon recovery methods |
| 06/03/2009 | CN101446200A Advancing coal-mining method |
| 06/03/2009 | CN100494629C Ribbed terrace method for wet type stack of fine tailings |
| 06/03/2009 | CN100494628C Comprehensive coal mining method |
| 06/03/2009 | CN100494627C Coal-mining method of high-dipping thick seam |
| 06/02/2009 | US7540693 Method for pillar recovery in chamber-and-pillar working and tubbing unit for pillar recovery |
| 05/28/2009 | US20090133987 Method and apparatus for processing a sized ore feed |
| 05/27/2009 | EP2061718A1 Transportation of sulphur from solid sulphur deposits, in blocks of large dimensions |
| 05/21/2009 | US20090127918 Vibratory milling machine having linear reciprocating motion |
| 05/20/2009 | DE202009003408U1 Fahrbare Brecheranlage Mobile crushing plant |
| 05/20/2009 | CN201241704Y Mounting fully-mechanized mining working face laneway of railless rubber wheel vehicle |
| 05/20/2009 | CN100489272C Top plate control method of Wangeviry coal mining region |
| 05/13/2009 | CN101429867A Major cycle slanting extraction method for coal mining work surface |
| 05/13/2009 | CN100487222C Energy saving method for rock drilling and tunneling driven by potential energy of water from deep well mining |
| 05/09/2009 | CA2640018A1 Method and apparatus for processing a sized ore feed |
| 05/07/2009 | US20090119078 Blasting Method |
| 05/07/2009 | US20090118889 Method of Driving Plurality of Mine Vehicles in Mine, and Transport System |
| 05/06/2009 | CN101424186A Method for recovering disc ore on incline ore block |
| 05/06/2009 | CN100485161C Upward spacing admission passage filling mining method |
| 04/30/2009 | WO2006135744A3 Oil extraction system and method |
| 04/29/2009 | CN101418689A High mining height workface stepped coal cutting process |
| 04/29/2009 | CN101418688A Intelligent full automatic combine coal mining system |
| 04/29/2009 | CN101418687A Sealing and coal mining method |
| 04/23/2009 | WO2009051678A2 Systems and methods for designing a haul road |
| 04/23/2009 | CA2701791A1 Systems and methods for designing a haul road |
| 04/22/2009 | EP1931554A4 Method of driving plurality of mine vehicles in mine, and transport system |
| 04/22/2009 | CN100480477C Small-sized ore loader for hole operation |