OWNERSHIP:

Cameco Corporation (70%)
AREVA Resources (30%)

OPERATOR:

Cameco Corporation

DISCOVERED:

1988 by Cameco Corporation

OPERATION:

McArthur River is the world's largest, high-grade uranium mine,contributing to 16 percent of the world's uranium production. It began operation in December 1999. McArthur River received ISO 14001 environmental management certification in January 2003.

CAPACITY:

Annual production capacity of 18.7 million lbs. U3O8 (7,193 tonnes uranium) milled at the Key Lake site

PRODUCTION:

16.6 million lbs. U3O8 (6,385 tonnes uranium) in 2008; all ore is milled at Key Lake

RESERVES:

332.6 million lbs. U3O8 (127,933 tonnes uranium) with an average grade of 20.69% U3O8

2008