File:Trojan Powder Company plant at Seiple, near Allentown, c. 1918.jpg
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![File:Trojan Powder Company plant at Seiple, near Allentown, c. 1918.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Trojan_Powder_Company_plant_at_Seiple%2C_near_Allentown%2C_c._1918.jpg/798px-Trojan_Powder_Company_plant_at_Seiple%2C_near_Allentown%2C_c._1918.jpg?20190805131602)
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