Dynamite ingredients are carefully weighed and mixed for the powder lines in the dope house at the Repauno, New Jersey plant of the DuPont Company. Operator is dumping ammonium nitrate into a bin mounted on scales.
Tunnel leads into one of the ten mound shaped buildings which form manufacturing area at DuPont's dynamite plant near Martinsburg, West Virginia. Concrete walls are twice as thick as foundation of well built home. Air conditioning is new feature of this unit, where dynamite is packed in cartridges.
Dynamite products starts at the acid area in the Repauno, New Jersey plant of the DuPont Company, where operator is shown hoeing finely ground sodium nitrate, an essential raw material, into the endless chain loader.
Charcoal and sulfur, basic raw materials, are stored separately at Belin Works near Moosic, Pennsylvania then pushed in these narrow gauge cars to mill for pulverizing. The plant furnishes all DuPont's black powder customers, ranging from fisherman's supply houses which by the product for whalers' and Coast Guard line throwing guns to specialty quarries producing monumental stone.