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HRS 1497 Protector Safety Lamp flame

Pit lamp video still of protected flame.
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Categories & Keywords
Category:Science and Technology
Subcategory:Instruments
Subcategory Detail:
Keywords:advertising, brass, coal, coal-mining, coalmines, eccles, engineering, industrial history, methane, mining, protector lamps, safety, safety lamps, salford, victorian

HRS 1497 Protector Safety Lamp flame