ONEOK was founded in 1906 as Oklahoma Natural Gas Company , but It changed its corporate name to ONEOK in December 1980 .
ONEOK , Inc. is a diversified Fortune 200 corporation based in Tulsa , Oklahoma .
corporation was founded in 1906 as Oklahoma Natural Gas Company , but ONEOK , Inc. changed ONEOK , Inc. 's corporate name corporation ONEOK in December 1980 .
ONEOK , Inc. is a diversified Fortune 200 corporation based in Tulsa , Oklahoma .