| Description | The file contains correspondence between Sir Robert McAlpine & Sons Ltd and Crown House Engineering Ltd then forwarded to Theatre Projects Consultants Ltd with related material [Crown House Engineering Ltd were sub-contractors of Sir Robert McAlpine & Sons Ltd] mainly regarding the electrical works for various items of the stage equipment as well as a number of brochures. Subjects discussed include the working light installation; Evershed Power-Optics Ltd Lower Theatre wiring; switchboards; lighting bridges, Upper Theatre matrix cubicle and CO2 system, CCTV wiring, sound and communication wiring, masking screens, Lower Theatre completion, small speaker installation, control panels, the issuing of record drawings, Lower Theatre control rooms, personnel lifts, rear stage wagon, snagging, UHF distribution, damaged cables and acoustic panels, lighting hoists, Lower Theatre fly tower, dividing / sound and fire doors, acceptance of Lower Theatre dimmer room, outstanding works and defects, testing, windlasses, wiring to chandeliers, power flying defects, scenery lift. Other correspondents include Denys Lasdun & Partners; Varilectric Ltd; D[erek] Mardon (Electrical Clerk of Works); Pye Business Communications Ltd; Chubb Fire Security Ltd; Flint & Neill Ltd; Mole-Richardson (Stage & Studio Engineering) Ltd; Ainslie Controls Ltd; Tele-Stage Associates Ltd; United Lift & Escalator Company Ltd; Hall Stage Equipment Ltd; Gough Econ Ltd; and Jones + Jennings Ltd. The file includes Flexello Castors & Wheels brochure; 'Surface preparation for 'Safety-Walk' Anti-Slip Surfacing'; Scotch Clad Anti-Slip Coating leaflet; 3M Anti-Slip Products; Dunlop brochure titled 'engineering in polyurethane'; Ferodo 'DeckTread' booklet; Tico S brochure; Structoplast SP51 booklet; Tico brochure titled 'Modern Machinery Installation'; and aTico LF Pad Materials brochure. Drawings and sketches include number 904/SK/619 'National Theatre C.C.R. Mains Switching', number 904/8-4-74 'Plan of Typical Lower Theatre Personnel Lift', and number 27985 A 'WSU 516 TM Wheel M.B', a part sold by Flexello Castors & Wheels Ltd. The original card folder has been disposed of. 'Closed McAlpines + CHE' was written on the front. |