Category:Science and Technology
Subcategory:Instruments
Subcategory Detail:
Keywords:advertising, brass, brass, coal, coal, coal-mining, coal-mining, coalmines, coalmines, eccles, eccles, engineering, engineering, industrial history, industrial history, methane, methane, mining, mining, protector lamps, protector lamps, safety, safety, safety lamps, safety lamps, salford, salford, victorian, victorianadvertising
