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7614705 |
Water spray assembly
A water spray assembly especially adapted for control of dust suppression in mining machines has a manifold with one or a number of nozzles mounted thereon. The manifold provides communication...
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7533942 |
Mine refuge
A mine refuge for use in a mine includes a chamber sized and shaped for occupancy by at least one miner. An oxygen supply is adapted to be installed in the chamber for supplying oxygen to the...
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7490440 |
Support device for a rib
A support device ( 8 ) for a rib ( 14 ) between a floor ( 18 ) and a roof ( 16 ). The device includes an expansion means ( 10 ) and a pair of resilient members ( 12 a, 12 b ). Each of the...
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7445045 |
Method of optimizing production of gas from vertical wells in coal seams
The present invention is directed to a method for producing gas from a subterranean formation containing a coal seam. The method includes the steps of drilling a substantially vertical well bore...
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7438506 |
Jack for carrying and installing mine panels
A jack includes a base, a guide extending from the base, and an extensible member having an extensible fit with the guide and extending from the guide to have a free end. A support is located at...
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7393060 |
Grid of synthetic material
The invention relates to a grid of synthetic material with two groups of parallel, load-bearing strands, wherein the strands of the first group extend in the longitudinal direction of the grid and...
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7334644 |
Method for forming a barrier
A method for forming a barrier to seal off a remote chamber includes the steps of: forming a borehole that communicates between a first location and the remote chamber; inserting a conduit through...
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7332007 |
Dusting device with multiple stream nozzles
A dedusting device 1 with a demister 15 advantageously arranged standing obliquely has a very compact construction because sufficient moistening or wetting of dust-containing crude air 24 is...
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7048340 |
Method for introducing and blowing rock dust and device for carrying out said method
In a method for introducing and blowing rock dust to bind carbon dust during advance working or coal mining using an advance working or mining machine, respectively, the cutting tools are retracted...
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7011167 |
Device for sealing a drill hole and for discharging drillings or stripped extraction material
In a device for sealing a bore hole and discharging drill cuttings and stripped excavation material, including a housing adapted to receive sealing elements and an opening capable of being...
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6966610 |
Treatment of rock surfaces
A method for providing a protective coating in a mine comprising spraying onto the rock surfaces of the mine a hot melt adhesive in an amount to form a coating at least 1 mm, preferably at least 2...
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6846132 |
Mine stopping and braces therefor
A mine stopping installed in a mine passageway includes a plurality of elongate panels extending generally vertically in side-by-side relation from a floor to a roof of the passageway to at least...
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6715961 |
Method of supporting mine walls and installing a mine stopping
A method of supporting opposite first and second walls of a mine passageway includes providing an elongate beam having opposite first and second ends and a longitudinal axis. The beam is configured...
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6682263 |
Multiple tier stopping and method of constructing stopping
A mine stopping installed in a mine passageway includes a lower tier of elongate panels extending generally vertically in side-by-side relation from a floor of the passageway. Each panel of the...
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6655877 |
Yielding column
A yielding column for support mine roofs or the like includes a tube provided with one or more circumferential rows of slots which provide a preferred locus for buckling. A reinforcing sleeve...
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6540304 |
Water spray assembly
A water spray assembly especially adapted for control of dust suppression in mining machines has a manifold with one or a number of nozzles mounted thereon. The manifold provides communication...
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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...
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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...
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6481933 |
Powered support frame for large seam thicknesses with controlled gap sealing plates
It is provide in a powered support frame, for large seam thicknesses with controlled gap sealing, that double acting gap cylinders ( 16, 27, 30 ) of several gap sealing elements ( 15 ) on a powered...
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6422790 |
Foam blocks for construction of mine tunnel stoppings
A light weight foam block being substantially rectangular in shape, having horizontal and/or vertical pairs of tongues and grooves around its perimeter enabling it to interlock with horizontally...
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6419324 |
Method of sealing off a mine passageway
A method of sealing off a mine passageway. The method involves installing a plurality of vertical panels side by side across the passageway to form a stopping. The stopping has gaps between...
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6357523 |
Drainage pattern with intersecting wells drilled from surface
Improved method and system for accessing subterranean deposits from the surface that substantially eliminates or reduces the disadvantages and problems associated with previous systems and methods....
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6325460 |
Machine used in connection with underground mining having an operator protective shield
A protective shield for machines having an operator station protects an operator located on the operator station during operation of the machine. The protective shield defines a flexible curtain of...
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6280000 |
Method for production of gas from a coal seam using intersecting well bores
A method for removing water and producing methane from a subterranean coal seam. The method includes drilling a first substantially vertical well bore to the depth of the target coal seam,...
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6243625 |
Automated quarry operation with communication interface
In an automated quarry operation an unmanned high pressure computer controlled liquid jet cutting system particularly adopted for cutting granite on-site with device for automatically and safely...
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6220785 |
Mine stopping, method of constructing same and panels thereof
A permanent mine stopping comprising two spaced-apart metal walls with a filling in the space therebetween keyed or adhesively bonded to the walls and having sufficient strength in tension to...
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6168240 |
Atmospheric detection system for an automated mining system
An atmospheric detection system for use in a mine that includes a continuous miner used in highwall applications. The continuous miner includes a rotary cutter head attached to a frame and one or...
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6082828 |
Mine gallery curtain and method
A curtain for defining a barrier in an underground passageway between a pair of spaced-apart pillars, comprising a bladder defined by a pair of flexible sheets joined together by a plurality of...
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6070944 |
Phasing valve assembly for supplying water to a mining machine cutter drum
A boom mounted cutter drum assembly of a continuous mining machine includes a center drum section, a pair of intermediate drum sections, and a pair of end drum sections. Spray nozzles on the...
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6007157 |
Slidably displaceable duct assembly for a mining machine
An apparatus for filtering airborne contaminates that has a frame member and a collection duct attached thereto. A duct assembly is slidably supported on the frame member and selectively movable...
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5997100 |
Inertization system for highwall mining
A highwall mining system for mining aggregate material from a seam (8) includes a mining device (9) for cutting aggregate material from the seam (8) thereby to form a drive (10) in the seam (8), a...
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5939986 |
Mobile machine hazardous working zone warning system
A warning system is provided for a mobile working machine to alert an individual of a potentially dangerous condition in the event the individual strays into a hazardous working zone of the...
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5765662 |
Wheeled raise skip
A raise buggy has a storage and transport cabinet for storing and transporting equipment and material along an inclined raise, over an inclined raise floor extending between a base level and a...
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5683294 |
Temporary brattice for mines
A brattice for temporary or emergency use in underground mining provides a quickly and easily installable partition to close off drifts or tunnels as desired to control ventilation through the mine...
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5673974 |
Dry dust removal device
The dry dust removal device for tunnelling or extraction machines includes a suction fan (15) and suction openings (14) close to the cutting rolls (23). There is a filter element (12) arranged...
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5537784 |
Inflatable portable refuge structure
An inflatable portable refuge structure includes at least one refuge chamber having a floor, ceiling and a peripheral sidewall and an inner resealable entrance in the peripheral sidewall of the...
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5518299 |
Dust control apparatus for longwall mining machinery
Apparatus for substantially removing dust created during mining by a mining machine, which has an elongated mobile frame and a laterally extending rotating drum at each end thereof for shearing...
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5507565 |
Method and apparatus for suppressing dust and frictional ignition on a continuous mining machine
A boom mounted cutter drum assembly of a continuous mining machine includes an intermediate drum section and a pair of end drum sections. Spray nozzles on the cutting elements of the cutter drum...
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5451315 |
Ore pass shaff water drainage means
An ore pass rush eliminator is disclosed which includes, in the ore pass shaft, a channel formed in the base of the shaft whereby excess water can pass to waste to avoid any build up of such water....
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5407253 |
Water spray ventilator system for continuous mining machines
The invention relates to a water spray ventilator system mounted on a continuous mining machine to streamline airflow and provide effective face ventilation of both respirable dust and methane in...
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5332036 |
Method of recovery of natural gases from underground coal formations
Methane is produced from a coal seam penetrated by an injection well and a gas production well by first introducing liquefied or gaseous carbon dioxide through the injection well and into the coal...
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5273344 |
Process for inerting a coal mining site
A process of inerting the coal mine site formed by a coal cutting auger or continuous miner at a coal face to supress methane/coal dust explosion includes introducing an inert gas such as waste...
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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...
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5253925 |
Method and apparatus for collecting and removing dust on a mining machine
A first duct system extends longitudinally on one side of a mining machine frame from an air inlet adjacent to a cutter drum carried on a boom rearwardly to an air outlet at the rearward end of the...
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5229017 |
Method of enhancing methane production from coal seams by dewatering
Dewatering of coal seams for facilitating the production of gas therefrom through a well is effected by treating the coal seam utilizing a well treatment fluid containing a dewatering aid which...
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5223165 |
Use of alkyl glycosides for dust suppression
A method of suppressing the generation or persistence of dust is provided. An aqueous composition of a higher alkyl glycoside is placed in contact with a friable solid material (e.g. coal) to...
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5219208 |
Scrubber for dispersing dust generated by longwall shearers
An air scrubbing system for removing dust produced by longwall shearers from the operator's work area. The system uses a plurality of small scrubbing units mounted on the shearer. Each of the...
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5203644 |
System to control contamination during retrieval of buried TRU waste
A system to control contamination during the retrieval of hazardous waste comprising an outer containment building, an inner containment building, within the outer containment building, an...
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5199825 |
Grid composite for longwall shield recovery in underground coal and trona mines
A grid composite for protecting men and longwall mining equipment during longwall shield recovery includes a regular polymer geogrid structure formed by biaxially drawing a continuous sheet of...
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5194174 |
Methods for suppressing fugitive dust emissions
An improved non-viscous aqueous dust control solution which includes a polyvinyl alcohol and boric acid. The improved solution may be spray applied or applied as a foam. The solution may include...
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