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Chemical industry
9
Corporations
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9
Hercules Incorporated
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9
Machinery
9
Cellulose
7
Employees
6
Cotton
5
African American men
2
African Americans
2
Detonators
2
Explosives
2
Extrusion process
2
Propellants
2
Graphite
1
Pentaerythritol tetranitrate
1
Plastics--Extrusion
1
Polymers
1