COMMITMENTS AND CONTINGENCIES

9 Months Ended

Sep. 30, 2012

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

10.   COMMITMENTS AND CONTINGENCIES

• As part of its ongoing business and operations, the Company has been required to provide assurance in the form of letters of credit for environmental and site restoration costs, custom credits, government grants and other general corporate purposes. As at September 30, 2012, the total amount of these guarantees was $136.0 million.