By Victor Alves Vale SA has chosen Shaun Usmar to lead its base metals division, aiming to increase copper and nickel production, Bloomberg News reported on July 3. The board of the Rio de Janeiro-based company selected Usmar for the role at Vale Base Metals, said the sources, who requested anonymity as the information is not yet public. The appointment is not finalised and could change, one source noted. Usmar, with over 30 years in the industry, is the founder and CEO of Triple Flag Precious Metals Corp., a Toronto-based streaming company. His previous roles include CFO at Barrick Gold Corp….