Specifications - Porgera Gold Mine, Papua New Guinea

Key Data
Producer of	Gold
Location	Enga Province, Papua New Guinea
Ownership	Barrick Gold Corp. (75%)
Geology type	Mineralisation associated with intrusive boundaries
Mineral type	Native and sulphide-associated gold
Reserve base	58.37Mt proven and probable, containing 7.3Moz Au (2004)
Annual production	845,000oz Au (2005)
Mining method	Open pit and underground mining
Processing method	Crushing, grinding, gravity recovery of free gold, flotation, pyrite concentrate pressure oxidation and carbon-in-pulp gold recovery
Employment	2,210 plus 510 contractors' staff
Key Equipment
Open pit	O&K RH 200 hydraulic excavators
	Caterpillar 789 haul trucks
Concentrator	Fuller-Traylor crusher and SAG mill
	Heath & Sherwood (1964) sampling systems
	Knelson gravity concentrator
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