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| Number | Title | Issue Date |
| 7232368 | Mine ventilation A mine air crossing includes opposite side walls and a deck extending from side wall to side wall. Each side wall includes a plurality of sections assembled side-by-side and interconnected by quick-connections. Similarly, each deck may include deck sections assemble... | 06/19/2007 |
| 7182687 | Air deflecting mine ventilation structure A mine ventilation structure is incorporated at the intersection of first and second intersecting passages in a mine. The ventilation structure comprises a tunnel-forming construction (e.g., a pair of side walls each walling off at least a portion of a respective mo... | 02/27/2007 |
| 7118472 | Control system for pneumatically-powered door installation A mine door installation has a frame installed in a mine passageway. At least one door leaf is mounted on the frame for swinging movement between open and closed positions. Movement of the door leaf is powered by a pneumatic actuator. A pneumatically-powered control... | 10/10/2006 |
| 6975975 | Emissions management and policy making system A management tool that allows a manager to review historical data and perform forecasting simulations relating to pollutant emissions from power plants and the like is disclosed. The management tool allows the outcomes of various pollution control strategies to be s... | 12/13/2005 |
| 6953395 | Ventilation system for underground structure A ventilation system for an underground structure which can internally supply fresh outdoor air by individually sucking and discharging air through fans of underground shafts in the underground structure such as an underground parking lot, underground warehouse, sub... | 10/11/2005 |
| 6938372 | Pneumatically-powered mine door installation with hydraulic checking system A mine door assembly has a frame. At least one door leaf is mounted on the frame for swinging movement between open and closed positions. Movement of the door leaf is powered by a pneumatic actuator. The door installation also has a hydraulic checking system for con... | 09/06/2005 |
| 6437457 | Airfoil ventilation system for a building and the like A ventilation system for a building, or other structure includes a roof and an airfoil mounted on the roof. The airfoil includes a tubular member having a longitudinal axis, an inside, an outside, and an elongated opening extending parallel to the longitu... | 08/20/2002 |
| 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 and/or vertically adjacent blocks to construct a mine stoppi... | 07/23/2002 |
| 5552088 | Non-ozone depleting malodorous composition of matter and warning system A non-ozone depleting malodorous composition of matter that contains a liquid mercaptan mixed with a nonflammable and non-ozone depleting solvent, 1,1,1,2-tetrafluoroethane, and with an inert gas such as nitrogen under pressure in a container for introduc... | 09/03/1996 |
| 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 |
| 5174682 | Mine ventilation overcast An overcast serving utility in the ventilation of tunnelways in an underground mine defined by an erected frame, typically made from steel, and including pivoting clips and splice strips for ready assembly and, as well, the absence of comingling of uncont... | 12/29/1992 |
| 4815363 | Life protector enclosure for mines An enclosure for periodic movement in an underground mine to provide a place for the safety of miners. This enclosure has a frame with an envelope unit attached thereto to define an interior volume for habitating by the miners upon notification of eminent... | 03/28/1989 |
| 4621951 | Modular reusable overcast The present invention relates to a modular system for construction of an overcast for use in a mine. The overcast comprises a plurality of rectangular sheets of cladding each braced to resist out of plane deformation and connected in edge abutment by fast... | 11/11/1986 |
| 4557524 | Mining machine duct work arrangement A mining machine is disclosed which has a vehicle body with a first end thereof having a boom pivoted for up and down rotational movement about an axis extending transversely of the vehicle. A cutter head is carried by the boom and a conveyor is mounted o... | 12/10/1985 |
| 4483238 | Dust control in longwall mining Boreholes are drilled at an angle from gate roads to the working face in a longwall mining operation, and air is exhausted from the working face area through the boreholes. Additional boreholes, parallel to the first boreholes, are drilled from the gate r... | 11/20/1984 |
| 4463973 | Sealed hinge An air duct system for use with mining machines in dust collection systems is connectable between a suction source and the cutting area of a mining machine and has two duct sections movable relative to each other. One duct section is mounted on the cutter... | 08/07/1984 |
| 4453383 | Apparatus for and method of utilizing solar energy The invention discloses an apparatus for generating electrical power using solar energy and an air mass rising from a mine shaft. The mine shaft has a generally inclined or vertical shaft, a shaft opening at approximately the ground level, and a lower end... | 06/12/1984 |
| 4358160 | Air diversion and dust control system for longwall shearers An air diversion and dust control system for primary use on longwall shearer mining machinery, consisting of directional fluid sprays and passive curtain barriers. The air moving characteristics of fluid sprays are combined with the splitting and blocking... | 11/09/1982 |
| 4353292 | Assembly for storing and facilitating application of breathing devices An assembly installable at an underground mine site for storing breathing apparatuses and for facilitating access to and application of such apparatuses comprises a matrix of storage receptacles closable on a common side by respective spring-loaded hinged... | 10/12/1982 |
| 4348057 | Blower and dust collecting machine and method of operation Dust generated in coal mining is removed by means of a blower having an exhaust fan which draws air through its intake opening from the face of the coal. The blower is provided with a first stage of closely-arranged small-diametered cylindrical-shaped ind... | 09/07/1982 |
| 4316811 | Dust suppressant A dust suppressant composition is described which is comprised of at least about 0.001 percent of polyethylene oxide with a molecular weight of at least about 6500, with the balance being water. Also described is a method for suppressing the formation of ... | 02/23/1982 |
| 4195886 | Radial mining method A method of mining a large underground seam of mineral, such as coal is described in which a first cylindrical shaft is drilled from the surface of the earth down to the mineral seam. A portion is enlarged at the base of the first shaft as a work room. A ... | 04/01/1980 |
| 4152126 | Equipment for removing dust particles from an air stream Apparatus for removing dust particles from an air stream includes a tubular housing having an inlet end and an outlet end; a plurality of Venturi tubes having open inflow ends and open outflow ends supported side-by-side within the housing, with their axe... | 05/01/1979 |
| 4076315 | Dust abatement device and method of dust abatement A dust abatement device including an intake or collecting means for delivering air to a rotating fan constituting a propulsion means, and outlet means directing air from the fan in a curtain at an area of dust concentration to inhibit dust movement out of... | 02/28/1978 |
| 4072351 | Radial mining method A method of mining a large underground seam of mineral such as coal is described in which a first cylindrical shaft is drilled from the surface of the earth down to the mineral seam. A portion is enlarged at the base of the first shaft as a work room. A f... | 02/07/1978 |
| 4068802 | Spraying system to control air-borne coal dust A spraying system for controlling air-borne particulate matter, such as coal dust, has a housing including a diverging diffuser portion into which a spray of liquid is injected. The spray causes a flow of air to pass into the diffuser portion and mix with... | 01/17/1978 |
| 4007966 | Single-entry mining development system Spaced apart single entries are driven into a mineral deposit to be developed by means of a short wall mining machine. A specially designed concrete-receiving slip-form located in the center of the entry is pulled along by a battery of roof supports which... | 02/15/1977 |
