Mr Monkey started his visit to the engine rooms of Tower Bridge by looking at the Lancashire Boilers. Four boilers used up to 20 tons of coal a week to power two Armstrong Mitchell & Co pumping engines. These pumped water from a resevoir under the floor into the hydraulic system at a pressure of 750 pounds per square inch. Mr Monkey was able to look into the boilers because Tower Bridge switched to electric power in 1976.
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Copyright Rik Shepherd and Mr Monkey. This page last modified 10 October 2006