The company held an 18% stake in Ok Tedi Mining Limited.

The company had mines in Çayeli, Turkey; Las Cruces, Spain; and Pyhäsalmi, Finland.

[3] In April 2004, the company agreed to merge with Aur Resources but the transaction was called off in June 2004.

[5] In January 2011, Lundin Mining agreed to combine with the company but in March 2011, the deal was called off after failing to win shareholder support.

[6] In March 2013, First Quantum Minerals acquired the company for C$5.1 billion in a successful hostile takeover bid.