The Toronto-headquartered company now expects production of 380,000–440,000 tonnes copper this year, down from earlier estimates of 400,000–450,000 tonnes.
Talon said the submittal covers several key aspects of the Tamarack nickel project, including no crushing or processing of ore at the mine site and water treatment.
Minto Metals' mining site was inspected on April 26, finding that its storage capacity for contaminated water in an open pit and tailings waste management were unsatisfactory.