Montreal-based Colt Resources has appointed executive chairman Richard Quesnel as president and CEO of Colt Resources Middle East (Cayman).

Terrence Byberg is the new president and CEO of Silver Stream Mining Corp. in Vancouver. He recently joined the company's technical advisory team and was a founder of Chieftain Metals as well as Silver Eagle Mines. Byberg replaces Robert Bell as head of the executive team.

Superior Copper Corp. of Toronto has proposed changes to its executive. The proposed incoming management includes Thomas Pladsen, Brent Peters, Christopher Irwin, and John D. Harvey, who have agreed to join the board of directors; John Tait, who has agreed to join as president and CEO; and Michael Leskovec, who has agreed to join as CFO and secretary.