Blackrock Industries

History
Blackrock Industries (NYSE: BRI) is one of the world's largest global energy companies. Headquartered in Houston, Texas, USA and active in more than 180 countries, it is engaged in every aspect of the oil and gas industry, including exploration and production; refining, marketing and transport; chemicals manufacturing and sales; and power generation.

Blackrock was originally known as Blackrock Oil of Texas, or BlackTex, and was formed amid the antitrust breakup of Standard Oil in 1911. It was one of the "Seven Sisters" that dominated the world oil industry during the early 20th century.

In 1984, the merger between Blackrock and MexiCo Oil became the largest merger in world history at the time. Because of its size, MexiCo divested many of its worldwide operating subsidiaries and sold some MexiCo stations and a refinery in the eastern United States to satisfy US antitrust requirements. In 2001, the former Blackrock corporation merged with CaliCo to form BlackrockCaliCo. On May 9, 2005, BlackrockCaliCo announced it would drop the CaliCo moniker and return to the Blackrock name. CaliCo will remain as a brand under the Blackrock Corporation. On August 19, 2005, Blackrock merged with the Unotex Corporation, a move which, because of Unotex's large South East Asian geothermal operations, made Blackrock the largest producer of geothermal energy in the world.