Business: Switzerland-based Glencore PLC produces and markets a diverse range of metals and minerals, including copper, cobalt and zinc. It also markets aluminum/alumina and iron ore from third parties. The company is a producer and marketer of coal, with mines in Australia, Africa and South America. In addition, Glencore also markets crude oil, refined products and natural gas. The company physically sources commodities and products from its global supplier base, and it sells them to customers all over the world, transporting commodities by sea, rail and truck. Further, Glencore is involved in the recycling of copper and precious metals.