OverviewArizona’s Next Major Copper mine

Augusta’s 100%-owned Rosemont deposit is located in Pima County, approximately 50 kilometres southeast of Tucson, Arizona.The project is expected to produce 221 million pounds of copper per year, which could account for as much as 10% of US copper output, making Rosemont the fourth largest copper mine in the US.

In addition to copper, Rosemont is expected to produce significant amounts of silver and molybdenum over its 20+ year mine life. As of January 2009, Rosemont has proven and probable mineral reserves containing 546 million tons grading 0.45% copper, 0.015%molybdenum and 0.12 ounces per ton silver in sulphide ore, and an additional 70 million tons at 0.17% copper in oxide ore. Production is projected to commence in 2014.

Proven & Probable⁽¹⁾Mineral Reserves
	Tons (000s)	% Cu	% Mo	Ag oz/ton	lbs Cu (millions)	lbs Mo (millions)	oz Ag (millions)
Proven & Probable⁽¹⁾Mineral Reserves
Sulfides:	546,338	0.45	0.015	0.12	4,930	161	65
Oxides:	69,974	0.17	-	-	241	-	-
Measured & Indicated⁽²⁾Mineral Resources
Measured & Indicated⁽²⁾Mineral Resources
Sulfides:	523,800	0.5	0.015	0.13	5,190	159.5	66.6
Oxides:	103,400	0.2	-	-	417	-	-
Mixed:	38,300	0.52	0.005	0.05	396	4	1.9
Inferred⁽²⁾ Mineral Resources
Sulfides:	160,600	0.45	0.008	0.07	1,440	25.7	10.9
Oxides:	30,400	0.24	-	-	147	-	-
Mixed:	19,100	0.37	0.004	0.01	141	1.5	0.3

1. Assumes prices of $1.75/lb Cu, $15.00/lb Mo and $10.00/oz Ag, and a $3.56/ton NSR Cut off for sulfides and $2.19/ton NSR Cut off for oxides
2. Assumes Cut off of 0.20% Cu for Sulfides, $0.10% Cu for Oxides and 0.20% Cu for Mixed

For the complete mineral reserve and resource table click here

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