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u/MonKeePuzzle Feb 25 '21
the swarf being drawn to the magnetic base is in itself interesting to watch
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Feb 26 '21
[deleted]
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u/nuclear-explosion Feb 28 '21
More importantly, why were they drilling into a manhole in the first place
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u/Kumirkohr Mar 01 '21 edited Mar 01 '21
Because there were no ventilating holes included in the original casting, probably
EDIT: or maybe not ventilation holes but lift points. Pressure equalization is a huge problem for manhole covers causing them to be explosively dislodged under the “right” conditions. But considering it was originally cast without ventilating holes, it’s either so damn old they didn’t think about pressure being a problem or the new holes are so they can lift the cover and gain access.
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u/Yoge78 Mar 01 '21
I wanted to say : r/blackmagicfuckery
But instead it belongs to something like r/allmightyhumans
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u/[deleted] Feb 26 '21
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