For a short period time I acted as a maintenance foreman at a old G.M. plant.It was one of the first G.M.plants At some time they used ashes from the coal fired power house to fill around the fire hydrants outside the buildings.
In the fall the fireman winterized the hydrants by flushing them and then filling them with anti-freeze.
Well after time the acid in the ash had eaten the bolts away, and when the fireman tried to open the hydrant it would break the bolts. So we had to dig up the hydrants. and replace the bolts. We used stainless steel bolts, to last forever. A lot of good that did as it is now a vacant lot.
But answer your question, no I don't want to see the bottom of a fire hydrant
Ray
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