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No.6 TPS and no.7 TPS in No.1 plant being revamped to eliminate air condensers and install fractionating towers. No.2 boiler house in background.

No.6 TPS in No.1 plant being revamped to eliminate air coolers and install fractionating towers.

Union Steam Pump Co piston pump inside a pumphouse.

Union Steam Pump Co piston pump inside a pumphouse.

SoCo (Indy) #1 plant; #1 boiler house, #1 pumphouse, #1 battery stills, #2 batter stills, #1 coke still.

SoCo (Indy) #1 plant; #1 boiler house, #1 pumphouse, #1 battery stills, #2 batter stills, #1 coke still.

#2 boiler house, cont stills, coke stills.

#2 boiler house, cont stills, coke stills.

Setting tower stills. View looking south toward mountain.

Wagon bridge #1 plant with a wagon. View upriver.