Section 1955.2 - Definitions(a) As used in this part unless the context clearly requires otherwise:(1)Act means the Occupational Safety and Health Act of 1970;(2)Assistant Secretary means Assistant Secretary of Labor for Occupational Safety and Health;(3)Commencement of a case under section 18(f) of the Act means, for the purpose of determining State jurisdiction following a final decision withdrawing approval of a plan, the issuance of a citation.(4)Developmental step includes, but is not limited to, those items listed in the published developmental schedule, or any revisions thereto, for each plan. A developmental step also includes those items in the plan as approved under section 18(c) of the Act, as well as those items in the approval decision which are subject to evaluations (see e.g., approval of Michigan plan), which were deemed necessary to make the State program at least as effective as the Federal program within the 3 year developmental period. (See part 1953 of this chapter.)(5)Final approval means approval of the State plan, or any modification thereof under section 18(e) of the Act and subpart D of 29 CFR part 1902.(6)Initial approval means approval of a State plan, or any modification thereof under section 18(c) of the Act and subpart C of 29 CFR part 1902;(7)Party includes the State agency or agencies designated to administer and enforce the State plan that is the subject of withdrawal proceedings, the Department of Labor, Occupational Safety and Health Administration (hereinafter called OSHA), represented by the Office of the Solicitor and any person participating in the proceedings pursuant to § 1955.17 ;(8)Person means an individual, partnership, association, corporation, business trust, legal representative, an organized group of individuals, or an agency, authority, or instrumentality of the United States or of a State;(9)Secretary means Secretary of Labor;(10)Separable portion of a plan for purposes of withdrawal of approval generally means an issue as defined in 29 CFR 1902.2(c) , i.e., "an industrial, occupational or hazard grouping which is at least as comprehensive as a corresponding grouping contained in(i) one or more sections in subpart B or R of part 1910 of this chapter, or(ii) one or more of the remaining subparts of part 1910": Provided, That wherever the Assistant Secretary has determined that other industrial, occupational or hazard groupings are administratively practicable, such groupings shall be considered separable portions of a plan.40 FR 23467, May 30, 1975, as amended at 67 FR 60129 , Sept. 25, 2002; 80 FR 49908 , Aug. 18, 2015