A U.S. based mineral exploration company focused on the development of lithium and boron resources in Nevada.

Non-integrated oil and natural gas company with reserves in the United States, Canada, offshore Trinidad and the United Kingdom North Sea.

A mining, exploration and development company producing silver, zinc and lead.

Designs and manufactures environmentally safe centrifugal concentrators, modular plants, analysis and laboratory testing equipment and related concentrate treatment equipment.

Involved with the exploration and evaluation of epithermal and mesothermal gold deposits, volcanogenic massive sulfide base and precious metal deposits, and copper-gold porphyry systems.

Site provides information on the company's global activities, investor relations, corporate governance, and policies on corporate responsibility.