- Circa 1950
General view of an exhibition display for explosives manufactured and sold by the Hercules Powder Company for use in metal mining.
Formed in 1912 as part of an anti-trust settlement with DuPont, the Hercules Powder…
General view of the Hercules Powder Company display at the 1954 American Mining Congress meeting held in San Francisco.
Formed in 1912 as part of an anti-trust settlement with DuPont, the Hercules Powder Company (later…
General view of Dearborn Chemical Company representative C.M. Kesler (seated) and hospital employee "Mike" examining a sample of water at Mary's Help Hospital (now Seton Medical Center) in San Francisco, California. Per…