Mining heavyweights to build pilot plant

Rio Tinto and Sumitomo Corp. have teamed up to build a demonstration plant aimed at reducing greenhouse gas emissions from the production of aluminum.

The A$111.1 million (US$73.9 million) pilot project, the first of its kind deployment of hydrogen calcination in the world, will be built in Australia at the Yarwun Alumina Refinery in Gladstone, Queensland.

The project, co-sponsored by the Australi...