It is very dark underground in mines and these help the miner do their work.
Edison invented the minor's safety lamp in the year 1914.
sir humprey
miners safety lamp Which was to be known as "The Davy Lamp"
sir humpherry
Sir Humphrey Davy in 1815.
a lamp boy is the medium of communication between miners whose lamps have gone out or have been rendered inefficient and the chief lamp man's room in the upper world. So basically he wonders around and gets the miners a lamp that works if there's doesn't.
for searching mines
Mine workers and those who have to access potential gas filled environments
Sir Humphry Davy.Gurjot Singh Sodhi
For information about the Davy safety miners' lamp see the related link below.
It saved millions of miners lives. It also reduced the deaths of billions of miners.
carbide and water mixture