Federal Leather Co, shot of man with explosives, shot of industrial factory?, welding, oil derrick installation? looks like some sort of drilling operation, drilling for water/natural gas, 1941/61? (seems more likely to be 1941 given 1943 well log in NJ & reel), likely footage of Federal Leather Co in New Jersey, likely related to XD9449 & XD9450 given numbering system on inserts
“187 Plant Sept 28/1942-48 Smoke stacks, Plant, Well Drilling, New Body?, 1951 also Dynamite Charger”