Steve Wolken's

Powder River Basin


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