Three engineers have been disciplined nearly eight years after one of Canada’s worst mining catastrophes. Engineers and Geoscientists British Columbia, a provincial regulatory and licensing body, said in a statement that its years-long investigation into the Mount Polley disaster was among its most complex cases. As a result, two former engineers have been ordered to pay a combined $226,500 while a third has been temporarily suspended and ordered to complete additional training. “This marks the final chapter in a long and difficult story for our province and our professions,” CEO Heidi Yang said in the statement. The tailings dam at the Mount Polley copper and gold mine, owned by Imperial Metals, failed in August 2014, releasing more than 20 cubic metres of mining wastewater into surrounding waterways in B.C.’s Interior. The regulator reviewed thousands of documents including contracts, technical reports and drawings, correspondence and daily site reports, it said. During …