Production and processing of metals
26(1)Installations for the production of pig iron or steel (that is, primary or secondary fusion) including continuous casting.
(2)Installations for the processing of ferrous metals, that is to say—
(a)hot-rolling mills;
(b)smitheries with hammers;
(c)application of protective fused metal coats.
(3)Ferrous metal foundries.
(4)Installations for the smelting of (including the alloyage of) non-ferrous metals except precious metals (including recovered products, for example, by refining or foundry casting).
(5)Installations for surface treatment of metals and plastic materials using an electrolytic or chemical process.
(6)Manufacture and assembly of motor vehicles and manufacture of motor-vehicle engines.
(7)Shipyards.
(8)Installations for the construction and repair of aircraft.
(9)Manufacture of railway equipment.
(10)Swaging by explosives.
(11)Installations for the roasting and sintering of metallic ores.