Coal reclamation from the Summit Mine dump

CIM Bulletin, Vol. 76, No. 860, 1983
GODFREY W. McDONALD, Selco Inc., DENNIS E. FREDRICKSON Cape Breton Joint Venture
Abstract Commercial coal mining has been recorded in Nova Scotia since 1863 and during I his period an estimated 60,000,000 short tons of mine discard containing 10 to 30% coal has been accumulated. Approximately 70% of these dumps are in the Cape Breton region and most are owned by the Cape Breton Development Corporation (CBDC), formerly DEVCO.
The explosion of oil produced energy costs which created an increase in thermal coal demand as well as the desire to rehabilitate abandoned mine dumps encouraged coal reclamation. CBDC was receptive to a proposal from the Selminco Joint Venture and encouraged the building of the Princess Recovery Plant (1980) and the Summit Plant (1982).
The mine dump contains scrap, waste rocks, coal and substantial quantities of fine shale. The scrap and oversize are removed and the remaining material slurried with water to a density of 1.45. The slurry is cycloned to separate the saleable thermal coal from the rejects which are returned to designated areas of the dump for contouring and revegetation.
Keywords: Mineral processing, Coal reclamation, Summit Mine dump, Prince Mine dump, Environmental control, Wastes, Cape Breton coal, Thermal coal, Coal washing plant, Coal cyclone plant
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