Original vintage mining magazine ad for MASURITE EXPLOSIVE COMPANY of Sharon, PA.  Avoid Accidents Remember Masurite M. L. F. Permissible Explosive is the one to use for coal mining in Winter as well as Summer.  Approximate size 9 x 6 inches. Old 1910 fractional page coal mining industry advertisement.  Would display beautifully matted and framed! 

Also shown are small ads for JOHN R. POWELL, of Plymouth, PA.  Powell's Squibs.  MINERS' SUPPLY COMPANY of St. Clair, PA.  A New Detonating Squib for Exploding Dynamite.  STAR ELECTRIC FUZE WORKS of Wilkes-Barre, PA.  Star Electric Squibs Red Spitters.  MEGARGEE BROTHERS of Scranton, PA.  Waterproof Blasting Paper.  Old 1910 fractional page coal mining industry advertisements.