Pit & Quarry, March 2010

E X C A V A T I N G D R E D G I N G Equilibrium dredger enhances operation The new E Dredger from E Crane International USA Inc features the E Crane super balanced equilibrium principle for smooth efficient energy saving operation in dredging and related applications The balanced counterweight design keeps the boom stick and grab in balance in all positions This minimizes tipping so the unit can be mounted on virtually any type of barge with or without spud poles The low E Dredger height allows maximum mobility under bridges and overhead obstructions Tail swing is less than 25 ft The all electric E Dredger operates on 300 hp and is designed and constructed for easy disassembly and reassembly The grab has greater closing power to remain clamped shut when filled and above the water level The Automatic Superlift Mode helps reduce the need to discharge material from the overloaded grab when exiting the water The grab rotator load cell and all connections and greases are designed and fitted for underwater applications The open stick construction eliminates buoyancy problems and improves placement accuracy E Dredgers are available in a variety of outreach downreach and lifting capacities The hydraulically adjustable operators cab provides optimum visibility The crane monitoring system includes readout screens in the cab with remote access connections for troubleshooting and reporting plus integrated software for visualization and guidance www ecrane usa com Ellicott Dredges offers three models of Swinging Dragon swinging ladder dredges an 8 in Model 300SL a 10 in Model 460SL and custom designs The 460SL can operate both in swinging ladder mode and conventional stern swing for wider cuts Ellicott also features the Jet Dragon which uses a Hydro Jet assist to ensure consistent production at maximum digging depths The Jet Dragon eliminates the need to install a ladder mounted dredge pump The Hydro Jet assist can be turned on and off as it may not be needed for shallower depths The Jet Dragon is ideal for mining operations with deeper dredging in their plans The Jet Dragon design can be added to the companys cutter head dredge models Mud Cat auger dredge products also are available from Ellicott and Liquid Waste Technology www dredge com Dredge models provide options consistent production 14 PIT QUARRY March 2010 www pitandquarry com