Pub. L. 91-173, tit. IV, pt. B, sec. 414

Sec. 414. (a) No claim for benefits under this part on account of total disability of a miner shall be considered unless it is filed on or before December 31, 1972, or, in the case of a claimant who is a widow, within six months after the death of her husband or by December 31, 1972, whichever is the later. (b) No benefits shall be paid under this part after December 31, 1972, if the claim therefor was filed after December 31, 1971. (c) No benefits under this part shall be payable for any period prior to the date a claim therefor is filed. (d) No benefits shall be paid under this part to the residents of any State which, after the date of enactment of this Act, reduces the benefits payable to persons eligible to receive benefits under this part, under its State laws which are applicable to its general work force with regard to workmen’s compensation, unemployment compensation, or disability insurance. (e) No benefits shall be payable to a widow under this part on account of the death of a miner unless (1) benefits under this part were being paid to such miner with respect to disability due to pneumoconiosis prior to his death, or (2) the death of such miner occurred prior to January 1, 1973.