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40 000 years ago really
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• When we first discovered mining 40 000 years ago I read that we used bones and flint to mine I am not sure if it is true or not
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the first lamps in mines were open sausers of oil [the date isn't accurit]
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it extemely helped the mining indistry
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Dynamite sped up mining but also made higher chances of the roof calpsing
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when we're mining we encounter toxic gasses underground and since 1949 we have used methanometre to detect them
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now with better lighting in mines such as led lights
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Now we have drills and better equipment we don’t have to work as hard as are ancestors did
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Now with all of new machines and tools for mining they’ve become quicker than when they used pickaxes
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In mines they have fans/vents to take out all the gasses so it becomes safer