A Canadian coal-mining company faces the largest fine imposed under the Fisheries Act after pleading guilty to contaminating waterways in southeastern British Columbia. Teck Coal, a subsidiary of Teck Resources, is to pay $60 million after a judge on Friday agreed to a joint submission from Environment Canada and the company. "Teck did not exercise all due diligence to prevent the deposit of coal mine waste rock leachate into the Fording River from settling ponds," federal prosecutor Alexander Clarkson, reading from an agreed statement of facts, said in B.C. provincial court.