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Hercules Historical Society
The Refugio Valley
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The Hercules Powder Works
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Tags: Giant Powder
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Title
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Date Added
Text
Advertising
California Powder Works
...2 more
Advertisements of California Powder Works
Early advertisements for Hercules brand dynamite.
Still Image
Explosives Industry
Giant Powder
Rock House Canyon - “Cradle of US Dynamite Industry”
Contemporary photo with cutline describing location of Giant Powder Works in Rock House Canyon, San Francisco.
Event
Giant Powder
Invention
Nitroglycerine Used on Sierra Tunnels, Transcontinental Railroad
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