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Keywords: JAMMING
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Journal Articles
Proceedings of the Institution of Civil Engineers (1981) 70 (3): 581–591.
Published: 01 August 1981
... consultants to Sir M. MacDonald in respect of.the electrical systems. Measures taken to prevent thegate from jamming are such that it would be stopped before there was any risk ofjamming. It is a simple matter to switch over the controls so that either end of the gate can be raised separately. There are two...

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