BRIEF-FirstEnergy Nuclear Operating Co says Beaver Valley Power Station unit 2 returned to service on May 21
* Says Beaver Valley Power Station Unit 2 in Shippingport, Pa., returned to service on Sunday, May 21
Dec 28 Hawaiian Holdings Inc
* Hawaiian Holdings Inc- on December 23, 2016, board of co increased size of board from nine to ten directors - SEC filing Source text: (bit.ly/2hpON8z) Further company coverage:
CHICAGO, May 22 CHS Inc, the biggest U.S. agricultural cooperative, named a new chief executive on Monday, after suffering a sharp decline in income and confirming it was a creditor of a failing Brazilian commodities trader.
* Serinus energy inc.: sabria field in tunisia temporarily shut-in