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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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7192093 |
Excavation apparatus and method
In one embodiment, an excavation method is provided that includes the steps of:
(a) contacting a rotating powered cutting head 440 of an excavator 400 with an excavation face 452 ,...
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7153541 |
Method for inhibiting oxidation of metal sulfide-containing material
The present invention provides means for inhibiting the oxidation of a metal sulfide-containing material, such as ore mine waste rock or metal sulfide taiulings, by coating the metal...
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7073868 |
Optimized kinetic energy machine for excavating underwater rock
A machine for improved excavation of underwater rock that eliminates failures due to over-stressed cutting teeth by positioning each hardened tooth for optimized Kinetic Energy. It has a plurality...
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7032978 |
Crushing method using large boreholes in underwater rock
The present invention relates to a crushing method using large boreholes in an underwater rock in which plural large boreholes are drilled on the rock in a predetermined space, the drilled...
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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...
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6764139 |
System for and method of demolition
A rugged demolition system, and method for its use, for pulling up horizontal structures such as concrete or asphalt and breaking them into pieces, pulling over and breaking up vertical structures...
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6672673 |
Ore pass inspection system
The present invention discloses an apparatus and method for imaging and clearing an ore pass hang-up. The apparatus includes: a platform that is movable along generally a longitudinal direction of...
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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...
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6547336 |
Open cast mining device and apparatus for testing the cutting minability of critical material
A surface mining and testing apparatus and system provides for the adaptation of a surface miner to the specific geological conditions of a new area of use. The special features of the surface...
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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...
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6431654 |
Mining machine having an extendable and retractable rotor arm and method of repairing an extendable and retractable rotor arm assembly
An extendable rotor arm for a mining machine includes a rotor arm having an end portion, a sleeve removably secured on at least part of the end portion, a rotor arm extension having an internal...
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6155649 |
Process for demolishing a bridge structure
A process for demolishing a bridge deck by a truck assembly equipped with a a receptacle comprised of a right side and a left side and a first wing rotatably connected to the right side of the...
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6139477 |
Process for producing slots, grooves, and planar excavations
A combination of conventional or superimposed percussive slot-cutting tools for creating slots and grooves, with eccentric, superimposed percussive, counterbalanced planar milling tools for...
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6109699 |
Tow line equipped remote mining machine and method
A method and apparatus for advancing cables and hoses to a remotely operated mining machine and retrieval of the machine in case of accident, and for remote haulage of material in a self-propelled...
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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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5553926 |
Self-propelled mining apparatus and method for cutting arched opening
A mining apparatus includes a frame, a mechanism for cutting an arched opening in a seam and winning the cut mineral, and a propulsion system. The cutting mechanism includes a boom supported...
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5421641 |
Powered tool for slicing or shearing roofing material
An apparatus and method for slicing roofing material includes a prime mover in the form of a powered tractor, and a slicing assembly mounted to the rear end of the tractor. The slicing assembly...
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5421523 |
Physio-chemical communication with expansive solidifiers
The physio-chemical method to break down raw materials utilizes a pressure- and temperature-controlled vessel to hold the raw materials in an expansive solidifier solution. The pressure and...
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5407252 |
Method and apparatus for scaling mine roofs and ribs
A mine scaling tool having a base plate to which a collar is concentrically attached on one side and appropriately supported with gusseted rib plates. A relatively long, heavy walled tube is...
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5390983 |
Roadbed profiler and method of profiling
A hard surface roadbed profiler designed to perform a repetitive drill hole collaring cycle. By generating a series of interconnected collar holes, an extended flat surface is created. The profiler...
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5340199 |
Method and machine for excavating drifts, tunnels, stopes, caverns or the like
To excavate drifts, tunnels, stopes, caverns or the like, tools operating in an undercutting manner are mounted on radially pivotable tool arms, which are located on a rotary working head. With at...
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5338102 |
Method of mining
A method of mining includes striking the surface of friable to brittle, essentially homogeneous mineral materials with a plurality of concave-faced cutting tools rotating about a longitudinal axis...
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5273343 |
Non-rotatable sleeve for a cutting tool bit holder and method of making the same
A deformed sleeve for mounting a cutting tool in a bit holder has one end shaped as an ellipse. The deformation is done by the application of pressure before heat treating. No further machining is...
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5234257 |
Mobile mining machine having tilted swing axis and method
A mobile mining machine for cutting a tunnel in rock has a wheel-like cutterhead assembly supported by a pitch boom assembly that causes movement of the cutterhead assembly in the vertical plane. A...
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5205612 |
Transport apparatus and method of forming same
Mining apparatus in which a cutting wheel supporting a plurality of roller-cutters rotates about a horizontal axis and is supported on a slewing boom for cutting a tunnel with a flat floor and roof...
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5163738 |
Apparatus for mining a seam, in particular of coal
A mining apparatus for working a horizontally and longitudinally extending seam having a vertical face has a longitudinal row of walking props extending along the face and each having a...
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5110188 |
Deformed shield tunneling method and tunneling machine
The present invention is applicable to a shield tunneling method and a tunneling machine therefor which excavate a deformed section by rotating a plurality of circular cutters. There is provided a...
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5102199 |
Continuous mining machine with a boom assembly providing different cutting heights and method of converting
A self propelled continuous mining machine includes a mobile frame assembly having a first pivot point for a boom assembly or an end of a piston cylinder assembly and a second pivot point for...
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5099921 |
Recovery of methane from solid carbonaceous subterranean formations
A method of recovering methane from a solid carbonaceous subterranean formation by injecting a fluid that desorbs methane through at least one injection well into a subterranean formation and...
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5028092 |
Impact kerfing rock cutter and method
A low velocity, high mass ram is connected to the cutting tool. The cutting tool has an array of impact forward and side buttons or bars which form chip-forming spaces there between. The side...
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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,...
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4900091 |
Electrohydraulic coal-mining system
A mining system comprises a laterally deflectable segmented conveyor extending longitudinally along a longitudinal face from which material is to be cut, a mining machine displaceable...
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4878712 |
Hydraulic method of mining coal
Coal is mined using water jets to a remove a layer of thin horizontal slices of coal. The thickness of the layer is sufficiently small that elastic deformation of the roof of the layer due to...
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4871211 |
Method of restoring refractory lining for repeated use using thermal shock and milling procedures
A method is provided for restoring a refractory lining for repeated use. The lining is present on a underlying wall surface and is still hot from a previous use when one induces thermal shock in...
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4852946 |
Surface working accessory and method
An accessory for the boom of road working equipment has a frame arranged for attachment to the boom. The accessory also has a shaft rotatably mounted in the frame. Also included is a motor mounted...
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4842444 |
Method for displacing oxygen from a mine
A method for preventing the formation of acidic mine water wherein inert gas in introduced into a mine cavity under positive pressure to displace oxygen contained therein. Upon detection of the...
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4822107 |
Cutter and method to remove surface coatings
A cutter-type apparatus is mounted on a tractor for positioning and locomotion to remove coatings from planar supporting surfaces of concrete, steel or similar materials. The apparatus defines a...
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4786111 |
Apparatus and method for delivering liquid coolant to drum mounted cutting tools
A roadway milling machine includes a hollow, cylindrically walled, shaft mounted, imperforate drum having tungsten carbide tipped steel cutting tools supported in tool holders extending generally...
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4761038 |
Surface working accessory
An accessory for the boom of road working equipment has a frame arranged for attachment to the boom. The accessory also has a shaft rotatably mounted in the frame. Also included is a motor mounted...
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4744604 |
Vibration damping device and a method for a road planer and the like
A vibration damper for a road planer and the like with a main frame and a sub-frame movably connected thereto. A prime mover and a tool are mounted on the sub-frame, which includes frame members...
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4682819 |
Method and apparatus for drilling hard material
A method for drilling a hole in a hard material such as rock. According to this method, the rock is fragmented by impact along spaced-apart, parallel paths while it is simultaneous fragmented by...
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4648660 |
Method and apparatus for mining machine cutter head
An improved cutting head for a mining machine having a rotary cutting head and shaft removably and rotatably attached to the forward end of a mining machine such that the shaft and cutting head...
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4623198 |
Method for reducing compressed air losses when driving underground cavities supported by compressed air
A method for reducing compressed air losses when driving underground cavities which are supported by compressed air. The part of the inner cavity face exposed by mining is sealed by a viscous...
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4611857 |
Solar powered focusing and directing apparatus for cutting, shaping, and polishing
A solar powered cutting, shaping, and polishing device is disclosed. In the preferred embodiment a large concave parabolic reflector is mounted on an X and Y axis rotatable (telescope type) mount...
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4560207 |
Method and apparatus for fragmenting asphalt
A method and apparatus for laterally severing an asphalt layer to form a ribbon, separating the asphalt ribbon from an underlying base, elevating the separated asphalt ribbon, and fracturing the...
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4557759 |
Iodine leach for the dissolution of gold
A process for the hydrometallurgical recovery of gold from materials containing gold comprising leaching the materials with a lixiviant containing iodine. To a solution concentrated with natural...
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4548442 |
Mobile mining machine and method
A first mobile mining machine for cutting mining tunnels in hard rock, which includes a horizontally swinging wheel-like cutterhead assembly mounted on a crawler and base frame assembly. The...
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4456303 |
Machine and method for grooving pavement
A method and apparatus are disclosed for grinding out a crack in pavement in preparation for filling the crack. A narrow groove is formed in the pavement following the crack by a single grooving...
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4441616 |
Process for sorting coarse to fine materials according to their chemical composition
Process for sorting coarse to fine materials according to their chemical composition, in which samples are taken and analyzed, and in which the transporting and/or further processing of the...
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