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Cannington Silver and Lead Mine, Queensland

Producer of

Silver, lead and zinc

Location

200km southeast of Mt Isa, Queensland, Australia

Ownership

BHP Billiton (100%)

Geology type

Sulphides hosted in Middle Proterozoic metamorphic rocks

Mineral type

Galena and sphalerite, with silver present as freibergite and native metal

Reserve base

18.0Mt grading 477 g/t silver, 10.7% lead and 3.9% zinc (2005)

Annual production

3.1Mt run-of-mine ore (2005)

Mining method

Long-hole open stoping

Processing method

Crushing, grinding, flotation, with leaching to recover silver from lead and zinc concentrates prior to smelting

Employment

500

Key equipment (underground)

Sandvik (Tamrock) development and production drills

Atlas Copco development and production drills

Caterpillar and Sandvik LHDs

Atlas Copco and Sandvik mine trucks
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