john fletcher 1 | 16/09/2018 11:33:46 |
893 forum posts | About 55 years ago I was a visitor to Ollerton Colliery and all the way along the tunnel workings was split open paper sacks of lime dust, on the floor. There was length of wood about a foot wide suspended at right angles to the tunnel filled / stacked up with lime dust. Dangling below the wood was a sort of string curtain thing. On enquiring, I was told if there was an rapid movement of air the planks would tipple over and fill the air with lime dust preventing a serious explosion.It was certainly dusty when walking along, I was impressed when I saw a wall of coal fall onto the conveyor belt and when some of pit props were removed. Not any more though, all gone, just distribution centres.. John |
Fowlers Fury | 16/09/2018 12:40:12 |
![]() 446 forum posts 88 photos | Howard Lewis' posting "..incident with..bench grinder.....used.to grind..wood...sparks from the metal set off the wood dust." |
Dalboy | 16/09/2018 12:54:34 |
![]() 1009 forum posts 305 photos | Posted by Fowlers Fury on 16/09/2018 12:40:12:
If you've used aluminium on your linisher, never use it then for steel before a good clean-up. Thermit process?? Not seen this happen but do know of the dangers. I don't put ali near my grinder for this reason, plus I find it clogs up the wheels so easily as well as the fact I sharpen HSS tools on it very often |
daveb | 16/09/2018 14:51:35 |
631 forum posts 14 photos | Posted by Brian G on 16/09/2018 07:48:25:
I was told that the demonstration firings of HMS Cavalier's guns are carried out with custard powder (I assume there is an oxidiser as well, but nobody mentioned that). Timely, as Chatham Dockyard's "Salute to the 40s" continues today. Brian
Top it up with jelly and our navy would would give the enemy their just desserts.
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Howard Lewis | 17/09/2018 21:59:13 |
7227 forum posts 21 photos | daveb Don't trifle with such matters! Howard |
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