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The Refugio Valley
Rocks, Soils, Hills and Valleys
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The Hercules Powder Works
Explosives and the Second Industrial Revolution
Commerce in Explosive Products
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Seeking Information on Ceramic Acid Vessels
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California Powder Works
DuPont
General Henry duPont acquires large equity stake in California Powder Works
Event
Buildings
Workers
Gathering at Clubhouse Bar for Dinner Dance with Quarter Century Club
People at bar in Clubhouse during Quarter Century Club. Workers with 25 years seniority.
Still Image
Buildings
Foxboro Grading
Pano …
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