After supervisors and engineers had witnessed the quick, efficient digging of a ditch in Johnson County, Iowa, by DuPont experts, they gave the Go Ahead on a long list of special projects in the area. Some idea of the height (150-180 feet) the muck...
Ripple Rock in the Seymour Narrows being exploded. In 1958, it was the largest non atomic explosion intentionally fired anywhere. There was 370,000 tons of rock shattered.
A supervisor of the DuPont Company's Explosives Department prepares to set off charge of 16,000 pounds of DuPont 60% gelatin dynamite which helped blast a trench for the Big Inch oil pipe line in the solid rock bottom of the Susquehanna River near...
This scene shows pipe for the Big Inch oil line being unloaded beside the Susquehanna River at Marietta, Pennsylvania. About sixty thousand pounds of DuPont 60% gelatin dynamite were used to blast a trench 2,000 feet long and eight feet deep in the...
Workmen unload part of the 60,000 pounds of DuPont 60% gelatin dynamite which will be used to blast a trench 2000 feet long and eight feet deep for the Big Inch oil pipe line in the solid rock bottom of the Susquehanna River near Marietta,...
This scene shows part of the loading of large cartridges of DuPont 60% gelatin dynamite in the Susquehanna River near Marietta, Pennsylvania. The cartridges were five inches in diameter, 24 inches long and weighed 25 pounds each. The illustration...
This view shows a shot of approximately 16,000 pounds of DuPont 60% gelatin dynamite in the Susquehanna River near Marietta, Pennsylvania. It was one of several blasts made to create a trench in the river bed for the laying of Big Inch, the world's...
A sluggish stream, blocked by silt, vegetation and roots, was released quickly through ditching a 225 foot long, channel engineers. It required 100 pounds of dynamite for a job that would have taken a long time by dragline. The demonstration was in...
This stream, near Oxford, Iowa was filled with silt, surface vegetation and roots forcing it to meander through the district. Because of sluggish drainage, heavy rain would raise the stream over an adjoining road. Under the direction of DuPont...
