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Updated: May 29, 2025
The man-engines which have been described are dangerous for novices, for should a person stop at the wrong time, he may be hurled to the bottom, or crushed at the return stroke. One of the most frequent accidents to which miners are exposed arises from an outbreak of fire-damp. To avoid this, various safety-lamps have been invented. The most celebrated is that known as Sir Humphrey Davy's lamp.
It was like being at the mouth of some extinct volcano. When the mine was being worked, ingenious machines were used in certain shafts of the Aberfoyle colliery, which in this respect was very well off; frames furnished with automatic lifts, working in wooden slides, oscillating ladders, called "man-engines," which, by a simple movement, permitted the miners to descend without danger.
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