References Letters

Suncor Energy Inc (1) (Formerly Petro-Canada)

Suncor Energy Inc (2) (Formerly Petro-Canada)

Suncor Energy Inc.

Suncor Energy Inc. (2)

Encana Corporation (Formerly PanCanadian)

Petrorep Resources Ltd

Shell Ltd

Nexen CNOOC Ltd (Formerly Wascana)


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