I've come across a few of these HOP access covers on the streets of Glasgow recently, and I've been struggling to find out what they were for.

My best guess is that they're part of an old hydraulic system which supplied high pressure (HP?) water for running lifts, presses and other machinery.

Cont./

#glasgow #glasgowhistory #industrialhistory #accesscovers #manholecovers #pastglasgow #streetfurniture

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The water was pressurised in a pumping station at 321 High Street and supplied through thirty miles of pipes below the city's streets.

Glasgow was one of the few cities to have such a high pressure hydraulic system and it operated from the 1890s until 1964.

Can anyone confirm if this is correct? Or provide another explanation?

#glasgow #glasgowhistory #industrialhistory #accesscovers #manholecovers #pastglasgow #streetfurniture

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Have a look at these 3 docs from the British Newspaper Archives. https://www.dropbox.com/scl/fo/qmk2fqmpoyzham16e25vg/h?rlkey=18cp614cavdwslvupnjegdyy3&dl=0

This was just a quick search - probably more to find.