by the United States government

“ Hearings and review.— If after issuing a citation or notification, the Secretary of Labor determines that a violation has not been corrected— (A) the citation and notification shall be deemed a final order (within the meaning of section 10 (b) of the Occupational Safety and Health Act of 1970) if the employer fails to notify the Secretary of Labor within 15 days (excluding Saturdays, Sundays, and Federal holidays) after receipt of the notice that the employer intends to contest the citation or notification ”

“ Employing office responsible for correction.— The regulations issued under paragraph (1) shall include a method of identifying, for purposes of this section and for different categories of violations of subsection (a) , the employing office responsible for correction of a particular violation. ”