The Sullivan Pb-Zn mine in British Columbia was worked for over 150 years and produced in excess of 100 Mt of ore grading in excess of 5% Pb and 6% Zn.
The Sullivan Pb-Zn mine in British Columbia was worked 105 years and produced 16,000,000 tonnes of lead and zinc, as well as 9,000 tonnes of silver. Grading was in excess of 5% Pb and 6% Zn.