410.210—Conditions of entitlement; widow or surviving divorced wife.
An individual is entitled to benefits if such individual:
(a)
Is the widow (see § 410.320) or surviving divorced wife (see § 410.321) of a miner (see § 410.110(j) );
(b)
Is not married during her initial month of entitlement (or, for months prior to May 1972, had not remarried since the miner's death);
(2)
Died before January 1, 1974, and it is determined that he was totally disabled due to pneumoconiosis at the time of his death, or that his death was due to pneumoconiosis (see subpart D of this part).