Texas Instruments
In 1930, J. Clarence Karcher and Eugene McDermott founded Geophysical Service, an early provider of seismic exploration services to the petroleum industry. In 1939, the company reorganized as Coronado Corp., an oil company with Geophysical Service Inc (GSI), now as a subsidiary. On December 6, 1941, McDermott along with three other GSI employees, J. Erik Jonsson, Cecil H. Green, and H.B. Peacock purchased GSI. During World War II, GSI expanded their services to include electronics for the U.S. Army, Signal Corps, and the U.S. Navy. In 1951, the company changed its name to Texas Instruments, with GSI becoming a wholly owned subsidiary of the new company.
TXI
TXI, formerly Texas Industries, was set up in 1946 and now is headquartered in Dallas, Texas. The company is focused on heavy construction materials in the southwestern United States market (e.g. Texas and California). There are mainly three products: cement (Portland, masonry and oil well cements), aggregates, and concrete related products. Until 2012, Texas Industries owned 82 manufacturing facilities in six states.