| Posted by FSWood on February 22, 2017 | |
Playing in Google just now found some useful info.
From the CDC, "Coal dust explosions in underground coal mines are prevented by generous application of rock dust (usually limestone). If an explosion should occur, the rock dust disperses, mixes with the coal dust and prevents flame propagation by acting as a thermal inhibitor or heat sink."
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Thanks for the enlightenment.
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| Posted by bradley on February 22, 2017 | |
So a the son of the owner of the local rock quarry was in class early one school year, acting a fool as always. The teacher asked him why he was such a nut. His reply, "must have been all the LSD I had over summer break". "LSD??" the teach ask. "Yeah" he says, "Lime Stone Dust"...
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