"%" wrote in message
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On 2019-03-02 3:06 p.m., Harry Bloomfield wrote:
Murmansk has brought this to us :
Any ideas how I can get hold of the head to stop it turning?

Centre pop the middle of the dome, then drill into it with progressivly
larger drill bits, to the thickness of the thread. The dome will then
come free and the rest of the bolt pulled out. It the head tries to turn
as you drill, clamp the nut with a mole grip.


cut it off with a torch

Much harder to do with it down a hole as he said the heads are.