Mark Sawyer

Xstrata Plc is engaged in the mining industry. Its business units include Xstrata Alloys, Xstrata Copper, Xstrata Zinc, Xstrata Coal, Xstrata Nickel, and Xstrata Technology Services. The Xstrata Alloys business unit produces ferrochrome, primary vanadium and owns carbon and anthracite operations, which supply key raw materials to its ferrochrome smelters. The Xstrata Copper business unit is a global copper producer and also manages a recycling business, Xstrata Recycling. The Xstrata Zinc business unit specializes in the mining and production of zinc. The Xstrata Coal business unit is an exporter of thermal coal and a significant producer of premium quality hard coking coal and semi-soft coal. The Xstrata Nickel business unit focuses on nickel and cobalt production and operates mines, refineries, and processing facilities. The Xstrata Technology Services business unit provides proprietary technologies and specialist services in the areas of mining, mineral processing, and metals extraction to major mining companies. The company was founded in 1926 and is headquartered in Zug, Switzerland.

Greenstone Capital LLP (Greenstone Capital) is an Independent Private Equity firm founded in 2013 by Michael John Haworth and Mark Raymond Sawyer. The firm is headquartered in London.