All photos are © John Walmsley. All rights reserved. Moral rights asserted. | #124489, Engineers (civil servants) at the National Gas Turbine Establishment, Pyestock, Hampshire, UK.

#124483, Engineers (civil servants) at the National Gas Turbine Establishment, Pyestock, Hampshire, UK.

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#124489, Engineers (civil servants) at the National Gas Turbine Establishment, Pyestock, Hampshire, UK.

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#124491, Engineers (civil servants) at the National Gas Turbine Establishment, Pyestock, Hampshire, UK.

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