| Description | Loose papers relating to testing and commissioning of hoists, including lists of tests for scenery hoists; a letter to Evershed Power-Optics Ltd from Theatre Projects Consultants Ltd regarding physical performance tests; drawing number X 12688 'Wiring Diag. National Theatre Hoist Systems Point Hoist'; notes; Evershed Power-Optics Ltd test specifications for commissioning a new hoist; drawing number W7470 'National Upper Scenery Hoists - Scenery Hoist - Circuit Diag'; Coubro + Scrutton Ltd engineer's time sheet for testing scenery hoists; meeting notes regarding the completion of the drum revolve and scenery hoists; Vickers Ltd's report on the lighting hoist installation (with note from Theatre Projects Consultants Ltd); and Vickers report on the scenery hoist installation. |