MEMORANDUM OPINION and ORDER
TURK, Chief Judge.Plaintiff has filed this action challenging the final decision of the Secretary of Health, Education and Welfare denying his claim for “black lung” benefits under the Federal Coal Mine Health and Safety Act of 1969, as amended, 30 U.S.C. § 901 et seq. Jurisdiction is pursuant to § 413(b) of the Act, 30 U.S.C. § 923(b), which incorporates § 205(g) of the Social Security Act, 42 U.S.C. § 405(g). The issues to be decided by this court are whether the Secretary’s final decision is supported by “substantial evidence,” and if it is, this court must affirm, or whether there is “good cause” to justify remanding the case to the Secretary for further consideration.
In an opinion eventually adopted as the final decision by the Secretary, the Administrative Law Judge found that Mr. Buckles, a miner for over twelve years, was not entitled to “black lung” benefits. In the formal opinion, the Law Judge specifically refused to consider two interpretations of x-ray films made in 1974 even though both x-ray reports were positive for pneumoconiosis (TR 16). The Administrative Law Judge based this refusal on the observation that the Secretary of Health, Education and Welfare “has jurisdiction to rule on claimant’s eligibility prior to July 1, 1973; thereafter, jurisdiction passes to the Department of Labor.” (TR 16). The operative effect of this ruling is that evidence submitted after the transfer of jurisdiction on July 1, 1973 cannot be considered as probative of total disability due to pneumoconiosis prior to that time.
Citing medical authority, this court has recently ruled that, due to the progressive nature of pneumoconiosis, evidence of the existence of the disease developed subsequent to the jurisdictional cut-off date is relevant to a determination as to whether it existed prior to July 1, 1973. Collins v. Weinberger, 401 F.Supp. 377 (W.D.Va.1975). Thus, if a living miner had ceased all mining or comparable employment and *483had filed an application for benefits prior to July 1, 1973, the Secretary should properly consider evidence of totally disabling pneumoconiosis developed subsequent to June 30, 1973. Collins v. Weinberger, supra. Since the positive x-ray reports of May 2, 1974 and April 22, 1974 obviously constitute evidence of this nature, the court remands this case to the Secretary for further consideration. Upon remand, both sides will be allowed to present additional evidence for consideration.