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5 h 36 min, 14 mai 1816 ans - 1816 the newly invented davy safety lamp was used for the first time it reduced the risk of explosions improving safety underground

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timeline Aidan 1

ByBlwyddyn 6
13 nov. 2017
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5 h 36 min, 14 mai 1816 ans
Maintenaint
~ Il y a 209 ans
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