Sherritt Gordon Mines Limited

Arthur G McMullen

Maurice A Clegg

Michael J Ruscoe

Ronald L Prowse

A process for the production of coin blanks suitable for minting into coins includes providing metallic core pieces, each core piece having opposed, substantially planar faces and a common side edge. The core pieces are loaded into a perforated container which is placed in an electroplating bath. A metallic cladding is placed on the core pieces, while moving the container angularly about a horizontal axis, until the metallic cladding has a thickness of at least about 0.05 mm on each face of each core piece and a thickness of at least 2 to 4 times the face thickness on the side edge of each core.

Process for the production of nickel clad steel coinage blank

A two-component blank suitable for minting into a coin is described. The blank consists of a low-carbon steel core completely encased in nickel. The blank has magnetic properties sufficiently similar to a solid nickel coin of the same size that the minted blank is accepted by magnetic property testing coin discriminating devices which accept pure nickel coins.

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Edmonton, Canada

Arthur G McMullen