Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure
Reexamination Certificate
2005-11-22
2005-11-22
Mitchell, Katherine (Department: 3677)
Mining or in situ disintegration of hard material
Processes
Stabilizing underground structure
C299S012000, C405S266000, C405S287100, C405S288000, C405S302400, C405S150200
Reexamination Certificate
active
06966610
ABSTRACT:
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 mm in thickness and allowing the coating to solidify. The hot melt adhesive preferably has a melting point on the range from 70 to 250 degrees Centigrade and may include a filler such as an inert material in finely divided form such as ground limestone, mica, sand and silica, the filler comprising between 1 and 40% by weight of the combined weight of adhesive and filler.
REFERENCES:
patent: 4093485 (1978-06-01), Ornsteen
patent: 4114382 (1978-09-01), Kubens et al.
patent: 4341301 (1982-07-01), Meyer et al.
patent: 4368924 (1983-01-01), Nussbaumer
patent: 4475847 (1984-10-01), Cornely et al.
patent: 4607066 (1986-08-01), Barry et al.
patent: 4746248 (1988-05-01), Lillis et al.
patent: 5375766 (1994-12-01), Sweeney
patent: 5401792 (1995-03-01), Babu et al.
patent: 5925409 (1999-07-01), Nava
patent: 1 187 657 (1965-02-01), None
patent: 28 23 898 (1978-12-01), None
patent: 37 05 095 (1988-09-01), None
patent: 0 254 501 (1988-01-01), None
patent: 0 761 457 (1997-03-01), None
patent: 2 393 044 (1978-12-01), None
patent: 2082655 (1982-03-01), None
patent: 2 750 430 (1998-01-01), None
patent: 2 159 512 (1985-12-01), None
patent: 63-161067 (1988-07-01), None
patent: WO 98 58886 (1998-12-01), None
patent: 82/3384 (1982-05-01), None
“Occupational Hazards of Spray-on Liner Applications in Underground Environments: Truths and Myths”, Archibald,, Espley, DeGagne, and Bickis, 101st Annual General Meeting of the Canadian Institute of Mining, Metallurgy and Petroleum, May 1999.
“Thin Spray-on Linings for Rock Failure Stabilization”, Archibald, J. F. and Lausch, P.; 37th U.S. Rock Mechanics Symposium—Rock Mechanics for Industry, Vail, Colorado, Jun., 1999, pp. 617-624.
“Recent Canadian Advances in the Application of Spray-on Polymeric Linings”, Archibald, J. F. and DeGagne, D, O.; Mining Health and Safety Conference 2000, Sudbury, Ontario, Apr., 2000, 21 pages.
Espley, Tannant, Baiden, Kaiser , “Design Criteria for Thin Spray-On Membrane Support for Underground Hardrock Mining”, Calgary '99 CIM-AGM, May 1999, 7 pages□□.
Pritchard et al., “TekFlex as a Spray-on Screen Replacement in an Underground Hard Rock Mine”, Calgary '99 CIM-AGM, May 1999, 6 pages.
Tannant et al. “Laboratory Test Procedures for Validating the Use of Thin Sprayed-On Liners for Mesh Replacement”, Calgary '99 CIM-AGM, May 1999, 8 pages.
“Validation of Rock Reinforcement Capacity Offered by Spray-on Mine Coatings”; Archibald, J. F. and Nicholls, T.; 102nd Annual General Meeting of the Canadian Institute of Mining, Metallurgy and Petroleum—CD-ROM Publication, Mar., 2000, 9 pages.
Patent Abstracts of Japan vol. 008, No. 145, Jul. 6, 1984 and JP 59 053572 A, Mar. 28, 1984.
Minova International Limited
Mitchell Katherine
Nixon & Vanderhye P.C.
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