Tug transporting dredgeDry Tortugas National Park; National Park Servicephoto of tug; prime mover to move dredge from place to place - necessary to move continuous supply of sand - fill [illegible
Bulldozer and tractorDry Tortugas National Park; National Park ServicePhoto of bulldozer (small and farm tractor). Tractor used to haul and lay "Spoil Pipe"
Rubble removal from moat wallDry Tortugas National Park; National Park ServiceTaken from the moat after low tide showing heavy rubble removal and bridge in place at 36' hole
Arches and casements Dry Tortugas National Park; National Park ServiceFort Jefferson National Monument gun replacements and archways within the casements
Dredges along dockDry Tortugas National Park; National Park Servicedredge to lift tug for dredge on right; Note: dredge must be moved from place to place w/tug