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.