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CMG Metal Mine – Hajar – Morocco

Producer of

Base metals

Location

35km south of Marrakesh, Morocco

Ownership

Compagnie Minière des Guemassa: Omnium Nord Africain (ONA) - 70%; Bureau des Recherches et des Participations Minières (BRPM) - 30%

Geological setting

Polymetallic sulphide orebody formed by hydrothermal alteration at boundary of volcano-sedimentary and carbonate sedimentary sequences

Mineral type

Banded pyrrhotite, pyrite, sphalerite, galena and chalcopyrite

Reserve base/grades

About 19.3Mt total reserves and resources, averaging 7% zinc, 2% lead and 0.5% copper (2002)

Annual production

Rated output of 265,000t/y of base-metal concentrates

Mining method

Cut-and-fill with some sub-level caving

Recovery method

Underground primary crushing followed by further crushing, grinding and flotation to yield three separate concentrates

Employment

260

Underground

Atlas Copco hydraulic drilling fleet

Tamrock Toro and Atlas Copco Wagner LHDs

Getman utility vehicles

Siemag Transplan hoisting

Nordberg (Bergeaud) crushers

Concentrator

Svedala Allis and Kumera mills

Dorr-Oliver and Outokumpu flotation cells

Eimco thickeners

Vernay and Larox filters

Bailey process control system
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