Teck is facing sanctions over infractions that include openings in the deposit where the ore is stored and a failure to build sufficient water infrastructure.
The probe focused on a 2010 deal through which the company gave a 9% of its South Deep mine to a group of black investors in order to meet government’s regulations aimed to boost black ownership.
It also plans to review the legal status of the joint venture, while it negotiates with Ivanhoe to raise its stake to 20% from the current 5% it holds.
The news came on the same day Royal Bank of Canada downgraded Goldcorp’s stock to “sector perform” from “outperform,” citing concerns over the miner’s ability to continue paying its monthly dividend.