Hajar Metal Mine, Morocco
Key Data:
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
Key Equipment:
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
