1
Carl L Elmore, Phillip Mitchell, Robert J Brison: Heap leaching with oxygen. Kamyr, Nixon & Vanderhye, January 26, 1988: US04721526 (38 worldwide citation)

A method and system for the percolation leaching of gold and silver ores applies a cyanide leaching liquid to a pile of gold and silver ore. Heap leaching, vat leaching, or the like may specifically be practiced. The cyanide leaching liquid is applied to the pile by spraying, flooding, or via a foam ...


2
W Phillip Mitchell: Readily collapsable portable lighting system having a simplified holder for color filters. Pitts & Kesterson, March 9, 1982: US04319311 (20 worldwide citation)

A portable lighting system which includes a stand having an adjustable effective length which positions lights carried on a frame at a predetermined vertical position with respect to a supporting surface. The frame is releasably secured to the stand and can readily be set up and dismantled for trans ...


3
Robert J Brison, Carl L Elmore, Phillip Mitchell: Utilization of oxygen in leaching and/or recovery procedures employing carbon. Kamyr, Nixon & Vanderhye, March 28, 1989: US04816234 (15 worldwide citation)

In gold and/or silver cyanide leaching-adsorption processes employing solid adsorbents such as activated charcoal, the overall efficiency in the recovery of gold and/or silver from ores or the like is greatly increased by contacting the cyanide slurry containing the gold and/or silver, with oxygen g ...


4
Elliott Phillip Mitchell: Selective positioning means for curtain assembly. March 19, 1974: US3797553 (9 worldwide citation)

A selective positioning means for a curtain assembly is disclosed as having a one-piece curtain element which is mounted on a spring-biased shaft and a rigid bar associated withthe curtain element wherein the selected positioning means is associated with the rigid bar and is arranged to overcome the ...


5
Robert J Brison, Carl L Elmore, Phillip Mitchell: Utilization of oxygen in leaching and/or recovery procedures employing carbon. Kamyr, Nixon & Vanderhye, July 5, 1988: US04754953 (7 worldwide citation)

In gold and/or silver cyanide leaching-adsorption processes employing solid adsorbents such as activated charcoal, the overall efficiency in the recovery of gold and/or silver from ores or the like is greatly increased by contacting the cyanide slurry containing the gold and/or silver, with oxygen g ...


6
Phillip Mitchell: Leaching solution distribution arm and control therefor. Kamyr, Nixon & Vanderhye, February 28, 1989: US04807854 (3 worldwide citation)

A rotatable leaching solution distribution arm is carried on a central chamber member and disposed in a tank at an elevation above another rotatable arm also carried by the member for distribution of a washing solution into the tank. The leaching solution distribution arm has discrete conduits termi ...


7
Elliott Phillip Mitchell: Drawing instruments. October 30, 1973: US3768166 (2 worldwide citation)

A drawing instrument is provided with integral legs joined at one end which may be pinned together on a co-acting pivot center at the joined end and which may further include rotatable journal elements mounted to the legs for adjustment of the legs by threaded shafts associated with a thumbwheel.


8
Carl L Elmore, Phillip Mitchell: Screen cleaning in CIL and CIP systems. Kamyr, Nixon & Vanderhye, February 13, 1990: US04900430 (2 worldwide citation)

In carbon-in-pulp (CIP) and carbon-in-leach (CIL) processes, especially those utilizing pure oxygen instead of normal air to increase the overall efficiency of the cyanide leaching-adsorption process in the recovery of gold and/or silver from ores, the screen within each tank which surrounds the slu ...


9
Carl L Elmore, Phillip Mitchell: Screen cleaning in cil & cip systems. Kamyr, Nixon & Vanderhye, September 11, 1990: US04955482 (1 worldwide citation)

In carbon-in-pulp (CIP) and carbon-in-leach (CIL) processes, especially those utilizing pure oxygen instead of normal air to increase the overall efficiency of the cyanide leaching-adsorption process in the recovery of gold and/or silver from ores, the screen within each tank which surrounds the slu ...


10
Robert J Brison, Carl L Elmore, Phillip Mitchell: Utilization of oxygen in leaching and/or recovery procedures employing carbon. Kamyr, Nixon & Vanderhye, July 20, 1993: US05229085 (1 worldwide citation)

In gold and/or silver cyanide leaching-adsorption processes employing solid adsorbents such as activated charcoal, the overall efficiency in the recovery of gold and/or silver from ores or the like is greatly increased by contacting the cyanide slurry containing the gold and/or silver, with oxygen g ...



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