In an action relief from an order of the Department of Labor's (DOL) Benefits Review Board (BRB) holding petitioner responsible for the payment of benefits to a coal miner and survivor's benefits to his widow under the Black Lung Benefits Act (BLBA), 30 U.S.C. section 901 et seq., the decision of the BRB is affirmed where petitioner, and not another operator, is liable for the claim.