ANYONE who has worked in the test department of an engine factory, or has lived in the immediate neighbourhood of one, knows the distressing effect of the almost unbearable intensity of the noise produced. There is little doubt that to those in constant daily contact with it, use does bring a certain amount of amelioration ; at any rate the casual visitor is amazed at the apparent indifference to the din of those engaged on watching the engine and taking recordings. At the same time, however, the nerves are all the time braced, consciously or unconsciously, to resist the effects of the noise and it is only a question of time before this affects the health of the worker.
(1938), "The Silencing of Engine Test Plant: An Important Matter which has been Successfully Attacked", Aircraft Engineering and Aerospace Technology, Vol. 10 No. 2, pp. 31-32. https://doi.org/10.1108/eb030271
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