The LCA of producing one kilogram of copper and one kilogram of nickel in concentrate using conventional underground mining techniques and base metal flotation at the TMM project was evaluated. The comparison of nickel and copper concentrate products from the TMM project were compared against the global average life cycle impact of each product generated by the product system with the same functional unit and equivalent methodological considerations.

The TMM project will co-produce copper, nickel and platinum group metals (PGMs) concentrates in the processing stage. Due to the production of co-products, the environmental impact is allocated between the primary products (copper and nickel concentrates) by mass of product and the co-products (PGMs) using economic allocation. Results, including insights to their impact made us conclude that there is significant potential for their products to be a good option for carbon-sensitivity in the value chain.

In their press release the Vice President, External Affairs and Project Operations, Dean DeBeltz noted the value of the LCA as “This life cycle assessment report reflects our commitment to the fight against climate change by both delivering the raw materials needed for our clean energy future and by using the most innovative technologies to reduce the impacts of our own operations”.