Rave Of Surveyor Or Mining Engineer. 19th Century Miner's Rave.

Rave Of Surveyor Or Mining Engineer. Rare metal rave entirely covered with copper (electroplating *), in order to avoid any risk of sparks, assigned to personnel intended to exercise functions of management, supervision and coordination of services, control, regulation, inspection, study, expertise and research. From the end of the 19th century around 1870/80. Good general condition, with traces of use.
- The oil lamp will give way at the end of the 19th century in the coal mines to the Davy lamp but will continue to light the miners in the other mines.
- the field of electroplating and electro-chemical operations: Is covering with a protective layer of an unalterable metal, such as gold, platinum, silver or copper.

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