| Description | The file contains correspondence and enclosures, file notes and drawings and relates to the sound insulating doors, safety curtain, and smoke outlets but also mentions lighting bridges, fly tower, power flying, drencher barrel, isolators, lighting hoists, drum revolve, grid modifications, external cabling, the performance of Mole-Richardson Ltd and equipment insurance. Correspondents include Theatre Projects Consultants Ltd, Mole-Richardson (Stage & Studio Engineering) Ltd, Denys Lasdun & Partners, the Greater London Council (GLC), Davis, Belfield and Everest, Flint & Neill Ltd, the London Fire Brigade, Precision Metal Forming Ltd, Sir Robert McAlpine & Sons Ltd, Evershed Power-Optics Ltd, Cookson Sheet Metal Developments Ltd and Denys Lasdun & Partners. Items include drawing number D18-245 'Rectification of Counterweight Holes for Rear Stage Dividing Door; a sketch entitled 'Proposal for Covering Gaps Required Due to Curtain Deflection at [3/DS/JE2]'; a sketch 'View on Face of Safety Curtain'; drawing number D18-309 'Lower Theatre Safety Curtain Cladding Layout'; a specification of Cookson weatherboarding with a sample; a sketch 'Cut-out reod. on safety curtain guides'; sketch number 552/7/8/73/1 'National Theatre Alternative Form of Safety Curtain' by Denys Lasdun and Partners; a schedule of statutory notice plates for dividing doors and shutters; and two sketches of the Lower Theatre Safety Curtain (W.O. 3089) with information about how much it weighs. Original folder disposed of. '904/5B3 (2) Nat. Th. Sound Insulating Doors Closed 22.6.77' was written on the spine. |