Black Thunder’s BE-2570 WS dragline – Ursa Major never rests

Ursa Major, a Bucyrus Erie 2570WS dragline is the third largest dragline ever built and weighs in at over 6700 tons.

Ursa Major, a Bucyrus Erie 2570WS dragline is the third largest dragline ever built and weighs in at over 6700 tons.

05. October 2011 by Jason Hayes
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One Comment

  1. Great Post!! Thank you very much!

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