A group of workers on the Wraysbury Reservoir construction site, checking a Electrowarn electronic sound device on the mast of a crane

Date:
22 Feb 1968
Location:
Wraysbury Reservoir, Spelthorne, Surrey
Reference:
JLP01/08/077868
Type:
Photograph (Negative)
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Description

The Electrowarn electronic sound device, made by Siebe Gorman, would set off a klaxon horn in the cab whenever the crane got too close to overhead cables.

This image was catalogued as part of the Breaking New Ground Project in partnership with the John Laing Charitable Trust in 2019-20.

Content

This is part of the Series: JLP01/08 John Laing Photographic Collection Black and White Negatives; within the Collection: JLP01 John Laing Photographic Collection

Rights

© Historic England Archive. John Laing Photographic Collection

Keywords

Late 20th Century Reservoir, People At Work, Science And Technology