Tulsa-based ONEOK Inc. has promoted Ed Farrell, president of Oklahoma Natural Gas Co. (ONGC) to senior vice president administration. The promotion takes effect Sept. 1. Farrell, 58, has been with ONEOK since 1995. Sam Combs, now western region vice president of ONGC, will become president of ONGC, and Combs will be succeeded by Dan Walker, now vice president of operations for ONGC and Kansas Gas Service Co. Roger Mitchell, manager of corporate communications and advertising for ONEOK, also was promoted to eastern region vice president of ONGC.

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