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Cominco Lead, Zinc and Silver Mine

Producer of

Lead, zinc and silver

Location

Kotzebue, western Alaska

Ownership

NANA Regional Corporation (property), Teck Cominco Alaska Inc. (operations, facilities)

Geology type

Stratabound hydrothermal sulphides

Mineral type

Sphalerite, pyrite, marcasite, galena

Reserve base

72.2Mt grading 17.7% Zn and 4.7% Pb (2005)

Annual production

3.1Mt of ore containing 568,000t Zn, 102,300t Pb and 1.97Moz Ag (2005)

Mining method

Open pit

Processing method

Crushing, grinding, tower milling, flotation

Employment

365

Open pit

Ingersoll Rand rig drill

Tamrock Driltech rig drill

Caterpillar 777 haul trucks

Caterpillar 992G wheel loaders

Caterpillar D9L dozers

Caterpillar 225 and 235 backhoes

Caterpillar 16G road grader

Concentrator

Fuller SAG and ball mills

Maxwell flotation cells

Canadian Process Technologies (CESL) column cells

Outokumpu flotation cells
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