NR from Dec 8 2009 included the info.

The Company may earn a 60% interest in a to be formed Mexican subsidiary of Teck (“Newco”) which will hold the Property, by advancing US $6 million to Teck toward purchase of shares in Newco, and incurring aggregate exploration expenditures of US $10 million on the Property on or before December 31, 2012. After the Company earns its 60% interest in Newco, Teck may elect to increase its interest to 60% by incurring aggregate optional expenditures equal to two times the expenditures incurred by the Company, to a maximum of US $20 million. Should Teck fail to exercise the option to earn a 60% interest, the Company can acquire a 100% interest in Newco by paying Teck a further US $20,000,000.

http://www.catalystcopper.com/media/news-releases/2009/svit-gold-announces-acquisition-interest-mexican-copper-property-financing-