“(1) If a Federal agency has promulgated and is enforcing a standard or regulation affecting occupational safety or health of some or all of the employees within that agency’s regulatory jurisdiction, and the Secretary determines that such a standard or regulation as promulgated and the manner in which the standard or regulation is being enforced provides protection to those employees that is at least as effective as the protection provided to those employees by this Act and the Secretary’s enforcement of this Act, the Secretary may publish a certification notice in the Federal Register. The notice shall set forth that determination and the reasons for the determination and certify that the Secretary has ceded jurisdiction to that Federal agency with respect to the specified standard or regulation affecting occupational safety or health. In determining whether to cede jurisdiction to a Federal agency, the Secretary shall seek to avoid duplication of, and conflicts between, health and safety requirements. Such certification shall remain in effect unless and until rescinded by the Secretary.
“(2) The Secretary shall, by regulation, establish procedures by which any person who may be adversely affected by a decision of the Secretary certifying that the Secretary has ceded jurisdiction to another Federal agency pursuant to paragraph (1) may petition the Secretary to rescind a certification notice under paragraph (1). Upon receipt of such a petition, the Secretary shall investigate the matter involved and shall, within 90 days after receipt of the petition, publish a decision with respect to the petition in the Federal Register.
“(3) Any person who may be adversely affected by—
“(A) a decision of the Secretary certifying that the Secretary has ceded jurisdiction to another Federal agency pursuant to paragraph (1); or
“(B) a decision of the Secretary denying a petition to rescind such a certification notice under paragraph (1),
“(4) Nothing in this Act shall apply to working conditions covered by the Federal Mine Safety and Health Act of 1977 (30 U.S.C. 801 et seq.).”