2. In Part II of Schedule 2, after paragraph 5(2) add—
“(3) Use for any of the following processes (except a process ancillary to the getting, dressing or treatment of minerals, carried on in or adjacent to a quarry or mine)—
(a)converting, re-heating, annealing, hardening, melting, carburising, forging or casting of iron or other metals or alloys;
(b)recovering of metal from scrap or drosses or ashes;
(c)galvanising;
(d)pickling or treatment of metal in acid; or
(e)chromium plating.”.