MINFILE Mineral Inventory
The Brenda mine began production in early 1970 with measured geological (proven) reserves of 160,556,700 tonnes grading 0.183 per cent copper and 0.049 per cent molybdenum at a cutoff of 0.3 per cent copper equivalent [eCu = % Cu + (3.45 x % Mo)]. ... Report of Mineral Production (Mineral Act of British Columbia - Section 71), Brenda …