In this Act, unless the context otherwise requires,--
         (a) "appointed day" means the date on which this Act comes into force;
         (b) "Coal Board" means the Coal Board established under section 4 of the Coal Mines (Conservation and Safety) Act, 1952 (12 of 1952);
         (c) "Coal Grading Board" means the Coal Grading Board constituted under section 3 of the Coal Grading Board Act, 1925 (31 of 1925).