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Electric cap lamp approved by U.S. Bureau of Mines
Description2 Although electric lighting began to be use
Although electric lighting began to be used in homes by the end of the nineteenth century, the high cost of installing electricity in mines delayed the widespread use of electric lamps in mines until 1915. The U.S. Bureau of Mines approved the electric cap lamp for use in mines in 1915.
lectric cap lamp for use in mines in 1915.  +
Priority Mining  +
Timeline Date January 1, 1915  +
Categories Health and safety , Accident prevention , Mine safety , Materials , Mining , Product safety engineering , Timeline
Modification date
"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by Semantic MediaWiki.
06:46:13, 23 November 2017  +
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