Clark Hale has joined Brooks Instrument as president and chief operating officer.

Greene’s Energy Group has named Frank Mathews president of its subsidiary, Devin International Inc. and vice president of the Devin Business Group.

RigNet Inc. has named Todd Moser to the position of vice president, chief accounting officer, and controller.

Ryan Ballard has joined Wood Group Surface Pumps as an applications engineer in its Houston sales office.

Aberdeen-headquartered Xodus Group has appointed Steve Jewell as director to drive forward a new global wells and subsurface business stream.

Fotech Solutions has appointed Nigel Leggett as chief operating officer.

A.T. (Tim) Cejka, president, ExxonMobil Exploration Co., and vice president, Exxon Mobil Corp., has elected to retire on Aug. 31, 2010, after more than 34 years of service.

Pulse Structural Monitoring, part of the Acteon Group, has appointed Richard Kluth as managing director.

McCrometer has appointed two new regional sales managers for the oil and gas market. Carlos Alexandre De Souza will lead the company’s regional South American team, and Kieron McCann will manage the Western European and Central Asia regions.