Initially an explosion is a violent out-rush of gas from the ignition source, but an inevitable and following in-rush (termed an after-blast by miners) fills the vacuum left by cooling gases and steam condensation. There are many causes of ignition of fire-damp in mine explosions. In the ...
I had the time to be thorough – so I was probably subconsciously avoiding something else – possibly my throbbing foot – and so I took the car seats out and shuddered in unison with the vacuum cleaner – poor wee Miele was going to need her stomach pumped after this one! Fortunately s...