Paragraph 3

(1)

In this Schedule—

(a)

“article” includes a part or component of an article, being a part or component made wholly or mainly from metal or from any combination of metal and plastics material;

(b)

“building” includes any structure or erection (other than a tent or caravan) and any part of a building as so defined;

(c)

“civil engineering work” means the construction, or demolition of a railway-line, siding or monorail, the construction, structural alteration, repair or demolition of any aerodrome, airport, bridge, road, viaduct, dock, harbour, pier, quay, wharf, coast protection, river or drainage work, aqueduct, canal, inland navigation, reservoir, waterworks, bore-hole, well (other than an oil-well), filter bed, sewage works, sewer, cooling tower or pond, tunnel, heading, adit, chimney, furnace, carbonising or gas-making plant, nuclear or thermal power station, hydro-electric station, electric line or any structure designed for its support, cable trench or duct, oil refinery, pipe-line or defence installation, the preparation of the site or the laying down of a foundation or sub-structure in connection with any of the said operations or with the erection of structural metalwork, the construction of a swimming pool or other bathing place or of a playing field or ground for sporting or recreational purposes or the laying out of a cemetery:

(d)

“company” “holding company” and “subsidiary” have the same meanings as in section 154 of the Companies Act 1948;

(e)

“electric line” means a wire or wires, conductor, or other means used for the purpose of conveying, transmitting or distributing electricity or any apparatus connected therewith;

(f)

“iron” and “steel” include respectively alloy iron and alloy steel containing in each case more than fifty-five per cent. of pure iron by weight;

(g)

“jewellery” includes any article of personal adornment (whether or not containing stones) but does not include clock or watch movements;

(h)

“local authority” means in England and Wales a local authority within the meaning of the Local Government Act 1933, a local authority within the meaning of the London Government Act 1939 or the Common Council of the City of London, and in Scotland, the council of a county, the town council of a burgh or a district council;

(i)

“manufacture” includes assembly or any process or operation incidental or appertaining to manufacture or assembly;

(j)

“metal” means any metal other than gold, silver or platinum, and includes any alloy that does not include any gold, silver or platinum;

(k)

“non-ferrous metal” means any metal other than iron or steel;

(l)

“plastics material” means any material made wholly or mainly by addition, polyaddition, condensation, polycondensation, ploymerisation, copolymerisation, esterification or other similar chemical process, or regenerated or modified cellulose, or hardened proteins, or natural resin modified by fusion or esterification;

(m)

“processing of plastics material” means any of the following operations when carried out on plastics material, that is to say, moulding, calendering, casting, thermoforming, encapsulation, extrusion, fabric coating, filament winding, heat sealing or laminate pressing;

(n)

“repair” includes re-conditioning, modification, alteration or conversion;

(o)

“ships”, “vessels” and “harbour” for the purposes of paragraph 2(a)(x) have the same meanings as in the Merchant Shipping Act 1894;

(p)

“vehicle body” includes a motorcycle sidecar, perambulator, invalid carriage, folding push-car or body for a caravan.

(2)

For the purposes of this Schedule, an activity shall not be deemed to be carried out in conjunction with any other activity unless such activities are carried out by the same employer, or by a holding company and another company which is a subsidiary of the holding company, or by companies which are subsidiaries of the same holding company.