| Description | The file contains a large number of test certificates issued by Coubro + Scrutton (M & I) Ltd, British Ropes Ltd, The Bristol Wire Rope Co Ltd and Newman Electronic Motors Ltd and a number of reports issued by National Vulcan Engineering Insurance Group Ltd after tests of all kinds of stage, lighting and sound equipment. There are also a few items of related correspondence and enclosures, including letters, short reports, handwritten notes, lists of tests and sketches sent between Theatre Projects Consultants Ltd and Sir Robert McAlpine & Sons Ltd, the Greater London Council (GLC), Mole-Richardson (Stage & Studio Engineering) Ltd, the National Theatre, National Vulcan Engineering Insurance Group Ltd and Tele-Stage Associates Ltd; between Denys Lasdun & Partners and the GLC and Sir Robert McAlpine & Sons Ltd; and between the GLC and the National Theatre. Items include a 'Report on Lyttelton Stage Elevators' and a 'Report on Cancellation of Dress Rehearsals Due to Power Flying Failures', 'Report on Drum Revolve, Static Load Test', a 'Report of Examination of New Plant' (Drum Revolve Stage) and a series of rough sketches 'Horizontal Movement of Elevators'. Original card folder disposed of. '904 NT Test Certificates' was written on the spine. |