Douglass Scott Barr

Golden Star Resources Ltd. engages in gold mining and exploration activities. It owns and operates the Wassa and Prestea mines situated in Ghana. The firm also operates through the following segments: Wassa, Bogoso or Prestea, Other, and Corporate. The company was founded by David A. Fennell on May 15, 1992 and is headquartered in Toronto, Canada.

Society of Manufacturing Engineers, Inc. is a non-profit organization that provides information and knowledge services. It offers engineers and executives with information on technologies and professional development resources. The firm also organizes expositions and other industry-related events. The company was founded in 1932 and is headquartered in Southfield, MI.

The American Institute of Chemical Engineers (AIChE) is a professional society with over 60,000 members in more than 110 countries. The private company is based in New York, NY, and has subsidiaries in the United States. AIChE offers various programs, including e-learning, webinars, and career advancement, to help chemical engineers at every career juncture bridge the skills gap created by the rush of technology, changing work styles, and unprecedented societal needs. Founded in 1908, AIChE is a focal point for information exchange on the frontiers of chemical engineering research in areas such as energy, sustainability, biological and environmental engineering, nanotechnology, and chemical plant safety and security.

Mining & Metallurgical Society of America operates as a association of mining and metallurgical. The company was founded in 1908 and is headquartered in Boulder, CO.

Pershing Gold Corp. is a gold and precious metals exploration company, which engages in the exploration, development, and mining of opportunities in Nevada. It focuses at Relief Canyon properties in Pershing County in northwestern Nevada. The company was founded on August 2, 2007 and is headquartered in Lovelock, NV.