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Subject
- E.I. du Pont de Nemours & Company35
- Chemical industry29
- Hercules Powder Company26
- Corporations24
- Explosives industry24
- Hercules Incorporated22
- Employees21
- Periodicals21
- Chemical industry--Periodicals17
- Chemists10
- Explosives10
- Chemists--Biography9
- Advertising6
- Blasting6
- Booth, James Curtis, 1810-18886
- Nylon6
- Advertising, Industrial5
- Mint of the United States5
- Polymers5
- United States Mint5