Alcoa Corporation is engaged in the production of bauxite, alumina and aluminum, and various cast and rolled products.
Devon Energy is an independent energy company engaged in the exploration and production of oil and natural gas.
Caterpillar is a corporation which designs, manufactures, markets and sells machinery and engines and sells financial products and insurance to customers via a worldwide dealer network.
Consol Energy Inc. is an energy company with interests in coal and natural gas production.
The goal of McEwen Mining is to qualify for inclusion in the S&P 500 by creating a high growth gold producer focused in the Americas.
ThyssenKrupp is a multinational conglomerate corporation, operating in the areas of mechanical, plant and materials technologies.
Pershing Gold Corporation is a gold and precious metals exploration company pursuing exploration, development and mining opportunities primarily in Nevada.
Newmont Mining Corporation is primarily a gold and copper producer, with significant operations.
Uranium Energy Corp is a uranium mining and exploration company with in-situ recovery projects and exploration properties in the U.S.
Coeur Mining is a gold and silver producer.
Allegheny Technologies is a global manufacturer of technically advanced specialty materials and complex components.
Martin Marietta is a supplier of aggregates and heavy building materials.