Dresser Atlas is a provider of oil field and factory automation services, formed in 1968 through the merger of PGAC and Lane Wells Company. In 1987, the company merged with Western Geophysical to form Western Atlas, and in 1998, Western Atlas was acquired by Baker Hughes, and, since then, was named Baker Atlas.
Providing oil field and factory automation services worldwide, Western Atlas Inc. was the world's largest provider of seismic data to the oil industry and was the leading designer of assembly lines for US vehicle manufacturers. The company was spun off from Litton Industries late in 1993. Sales during 1994, its first year of operation as an independent, topped $2 billion. About 75 percent of those receipts were garnered from foreign operations.
Dresser Atlas was a division of Dresser Industries Inc.
Dresser Atlas provided open-hole petrophysics and oilfield completion services around the world in competition with Schlumberger and others.
Corporate headquarters in Dallas TX, offices in Oklahoma City, ... US field bases included: Olney IL, Big Rapids MI, Houston TX, Woodward OK, Elk City OK, Baton Rouge LA, Rock Springs WY, ... Overseas operations: main offices London, training base: Bremen Germany; bases in Dhahran Saudi Arabia, Stavanger Norway, Maracaibo Venezuela, Kuwait, Nigeria, ...
... many more bases (not sure if Wikipedia users interested in this sort of detail, there is a lot more).