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Prismatic press
W.F. Lynch and group of pipefitters
Men with hand railcar entering a hydraulic elevator
Saltpeter refinery (center) at Eleutherian Mills powder yard
W.F. Lynch and group of pipefitters
Prismatic presses
George Jones and assistant with prismatic presses
Writings, nationalization of armaments manufacture
Employees outside the blacksmith shop
Six men standing beside horse and cart next to rails along river bank
Line of incorporating mills
Storehouse, tin shop, and band room on Hagley Yard
Horse-drawn wagon for transporting empty metallic kegs to the mills
Main magazine where powder was shipped
Horse-drawn car taking powder to main magazine at Brandywine powder yards
Writings, Mexico
Employees outside blacksmith shop near gate
Man standing in front of closed blacksmith shop gate
Francis G. du Pont and Harry Miller installing boilers at Old Stone Block
Original incorporating mills on Brandywine Creek
Charcoal house
Pierre A. Gentieu and other men outside old office on Hagley Yard
Three men with covered wagon and mules
Covered wagon outside of main packing house

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