For the purposes of this Chapter, –
(a) ‘Industrial establishment’ means-
(i) A factory as defined in clause (m) of section 2 of the Factories Act, 1948 (63 of 1948);
(ii) A mine as defined in clause (o) of sub-section (1) of section 2 of the Mines Act, 1952 (35 of 1952); or
(iii) A plantation as defined in clause (f) of section 2 of the Plantations Labour Act, 1951 (69 of 1951);
(b) Notwithstanding anything contained in sub-clause (ii) of clause (a) of section 2,-
(i) In relation to any company in which not less than fifty-one per cent. of the paid-up share capital is held by the Central Government, or
(ii) In relation to any corporation not being a corporation referred to in sub-clause (i) of clause (a) of section 2 established by or under any law made by Parliament, the Central Government shall be the appropriate Government.