[Trade catalogs on electric mine lighting : miners' safety and carbide lamps and parts, portable acetylene lamps, alkaline lamps, alkaline accumulators; oxygen deficiency indicator ...

The Grier Brothers of Pittsburgh, Pennsylvania began manufacturing carbide mining lamps in 1911. Their finances took a fatal blow in 1922 when the Supreme Court ruled against them for patent ...

Lit by carbide lamps with ore cars accommodated by narrow gauge tracks, the tunnel was considered a marvel of engineering. It was completed in 1904 at a cost of $500,000.

Justrite Carbide Cap and Hand Lamps by Justrite Manufacturing Co. Usage Public Domain Mark 1.0 Topics tool catalog, mining tools, cap lamps, lanterns and lamps Collection ...

The Charleston Police Department’s Community Relations Unit trailer is being placed in various parts of the city so residents may make suggestions on updating Charleston’s 20-year ...