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Employees filling electric blasting caps at Hercules Port Ewen plant - Science History Institute Digital Collections
MINING CATALOG
Apparatus for production of blasting caps at Hercules Port Ewen plant - Science History Institute Digital Collections
Early Blasting Caps Tins - thesteelbeam
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Electric Blasting Cap Action exhibition display (circa 1950) - Science History Institute Digital Collections
Types of blasting Caps used in Bisbee's underground mines
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VTG 1920''s Hercules Blasting Caps Mining Explosives Wooden Box Crate 15A55 -- Antique Price Guide Details Page
Early Blasting Caps Tins - thesteelbeam
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Detonator - Wikipedia
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Twelve Hercules Blasting Cap Containers
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Dynamite, blasting caps found in Central Washington orchard | KVAL
