Steve Wolken's

Powder River Basin
Pictures

 

URSA MAJOR (Bucyrus-Erie  2570WS)

 

Arch Coal claims that Ursa Major is "North Americas largest operating dragline".  It weighs in at 14.7 million pounds, has a 170 CuYd bucket and a 360 ft boom.  Acquisition cost was $50 million.

 

 


I was lucky enough to be there for a routine 
inspection of the 170 Cubic Yard bucket

  

 

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