Machinery
Unlike most mining equipment , the bulk of draglines are not dieselpowered . Their power consumption relies on a direct connection to the high-voltage grid at voltages of between 6.6 and 22kV . A typical dragline can use up to six megawatts during normal digging operations .
The biggest and baddest draglines ever built The mining sector has seen its fair share of extravagant dragline machinery . The industry , which boasts some of the biggest and baddest equipment the world has ever seen , has encountered some massive draglines .
Manufactured in the United States , the Bucyrus Erie 2570-W dragline
Big Muskie
Photo copyright : Eric Gunderson is currently the world ’ s largest operational dragline . Nicknamed Old Glory , the dragline is owned and operated by Peabody Energy and currently utilized at the company ’ s Bear Run mine in Indiana . The dragline is equipped with an impressive scooping depth of over 215 feet with a bucket capacity of 115 cubic yards . Weighing in at over 6,000 tons , the Bucyrus Erie 2570-W is over 200 feet tall with an operating radius of 300 feet .
Another Bucyrus dragline to make our list , the 8200 Walking Dragline is one of the world ’ s largest draglines currently in operations . Nicknamed Liberty , the massive dragline weighs over nine million pounds and operates with a 160-yard bucket . This behemoth is close to seven stories high and can move roughly 250,000 pound of earth across 200 yards in less than 60 second .
The “ Big Muskie ” was once the world ’ s largest earth moving machine . Built in 1969 and dismantled in 1991 , the Big Muskie could move 39 million pounds of earth and rock every hour , reaching coal seams 100-150 feet down . Weighing nearly 12,000 tons , this dragline was 22 stories tall with a
10 D ecember 2014