A biomining company that’s rooting around Sudbury’s mine tailings insists there are multiple metal and commodity products waiting to be extracted.
Bioleaching is a globally well-known biotechnology that was developed 40 years ago. Companies like BacTech have been fine-tuning its process, using Sudbury as a testing ground in co-operation with MIRARCO, a Sudbury mining innovation centre, and local nickel mining giant Vale. Pyrrhotite is an iron sulphide mineral containing low levels of nickel, cobalt, and copper. It’s discarded by the mining companies as an uneconomical waste byproduct, but it continues to perpetuate an environmental legacy problem that’s in need of remediation.
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