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History of Hercules, California
History: The Land and Peoples of Refugio Valley
Geology and Soils
Estuary and Watershed
Human Settlement
Transportation
History: Explosives Manufacture at the Hercules Works
Significance of the Hercules Works
Development of the Explosives Industry
Gold Rush, Black Powder and Dynamite
Market Power of the Producers of Explosives
Operation and Development of the Hercules Works
Conditions of Production
History: the Municipality
The Factory Town
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Municipal Crisis
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Robert (Bob) Polacchi
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Robert (Bob) Polacchi
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Men
Citation
“Robert (Bob) Polacchi,”
Hercules Historical Society
, accessed September 30, 2023,
http://herculeshistory.org/items/show/379
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