Richard Alan Avery

Rio Tinto Metals Ltd. is a mining exploration, and manufactures metal products. It produces aluminium, copper, diamonds, minerals, and thermal coke. The company is headquartered in London, the United Kingdom.

RIO Tinto Brazilian Holdings Ltd. is a holding company. The company is headquartered in London, the United Kingdom.

Thos. W. Ward Ltd. manufactures steel frame buildings, bridges, collieries, steel works equipment and furnaces. The company was founded on May 19, 1904 and is headquartered in London, the United Kingdom.

Rio Tinto Australian Holdings Ltd. engages in mining and exploration of copper ores. The company is headquartered in London, the United Kingdom.

Rio Tinto Overseas Holdings Ltd. operates as a holding company. The company is headquartered in London, the United Kingdom.

Part of Rio Tinto Plc, Rio Tinto Uranium Ltd. is a British company that manufactures nonmetallic mineral products. The company is based in London, UK.

Founded in 2007, RTA Holdco 1 Ltd. is a subsidiary of Rio Tinto Plc and functions as an investment holding British company. The company is based in London, UK.

Founded in 2007, RTA Holdco 4 Ltd. is a subsidiary of Rio Tinto Plc and functions as an investment holding British company. The company is based in London, UK.

Founded in 2012, Rio Tinto Technological Resources UK Ltd. is a subsidiary of Rio Tinto Plc. The company is based in London, UK and specializes in researching and developing step change technology.