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 15 Tesoro
* Tesoro announces intention to offer $1.6 billion in senior notes
* Tesoro Corp says proposing to offer in an unregistered offering $1.6 billion in aggregate principal amount of senior notes due 2023 and senior notes due 2026
* Tesoro says Intends to use combination of net proceeds from offering, cash on hand, borrowings to fund western refining deal
* Tesoro says Intends to use combination of net proceeds from offering of notes, among others, to fund cash consideration of Western Refining deal Source text for Eikon: 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.