An engraving depicting a diver attached to a drilling scow putting the charges in drill holes. Cartridges of nitro-glycerine were 10 ft long and 4-5 inches in diameter. This method of demolition was used during the removal of the Hell Gate Rocks on the East River. Dated 19th century

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Size: 4062px × 5163px
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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 19th, america, archival, archive, attached, century, charges, chemistry, diver, drilling, east, engraving, explosion, explosives, gate, hell, historical, history, nitro-glycerine, process, river, rocks, scow, york