NEW YORK--(BUSINESS WIRE)--Fitch Ratings has affirmed Mountaineer Gas Company's (MGC) Long-Term Issuer Default Rating (IDR) at 'BB+' and Senior Unsecured Debt rating at 'BBB-'. A complete list of rating actions follows at the end of this press release. The Rating Outlook is Stable. These rating actions affect $90 million of long-term debt. The ratings on MGC primarily reflect balanced recent rate case outcomes in an otherwise challenging regulatory environment in West Virginia. The ratings also