CLAREMORE, Okla. (AP) — State economic officials say plans by Baker Hughes to add 667 jobs in northeast Oklahoma is the biggest economic development announcement in the state this year.

Houston-based Baker Hughes announced Wednesday that it has a 10-year expansion plan for its manufacturing and research facilities in Claremore, Broken Arrow, Sand Springs and Barnsdall. The Tulsa World reports that most of the new jobs will be at the Claremore and Broken Arrow plants.

Submersible pump systems for oilfields are built at the Claremore plant while safety valves and other safety systems are produced at the Broken Arrow plant.

Company officials said the jobs will be in manufacturing and engineering and will pay $30,000 a year and above.