(a) An individual is eligible for benefits as a surviving parent, brother or sister if all of the following requirements are met:

(1) The individual is the parent, brother, or sister of a deceased miner;

(2) The individual was dependent on the miner at the pertinent time;

(3) Proof of support is filed within 2 years after the miner's death, unless the time is extended for good cause (§ 725.226);

(4) In the case of a brother or sister, such individual also:

(i) Is under 18 years of age; or

(ii) Is under a disability as defined in section 223(d) of the Social Security Act, 42 U.S.C. 423(d), which began before such individual attained age 22, or in the case of a student, before the student ceased to be a student; or

(iii) Is a student (see § 725.209(b)); or

(iv) Is under a disability as defined in section 223(d) of the Social Security Act, 42 U.S.C. 423(d), at the time of the miner's death;

(5) The deceased miner:

(i) Was entitled to benefits under section 415 or part C of title IV of the Act as a result of a claim filed prior to January 1, 1982; or

(ii) Is determined as a result of a claim filed prior to January 1, 1982, to have been totally disabled due to pneumoconiosis at the time of death or to have died due to pneumoconiosis. A surviving dependent parent, brother or sister of a miner whose claim is filed on or after January 1, 1982, must establish that the miner's death was due to pneumoconiosis in order to establish entitlement to benefits, except where entitlement is established under § 718.306 of part 718 on a claim filed prior to June 30, 1982.

(b)(1) A parent is not entitled to benefits if the deceased miner was survived by a spouse or child at the time of such miner's death.

(2) A brother or sister is not entitled to benefits if the deceased miner was survived by a spouse, child, or parent at the time of such miner's death.