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CONTENT] Uralmash produced 20/90 heavy dragline excavator works on... News PhotoEarth Mover,Equipment,Horizontal,Length,Russia,Science and Technology,WorkingPhotographer Collection: Moment © 2013 Alexey Podkholzin[UNVERIFIED CONTENT] Uralmash (Russia) produced 20/90 heavy dragline excavator works on Chernogorsky open-pit mine (steam coal) in the Republic of Khakassia of the Russian Federation. 20/90 means Bucket Capacity of 20m3/Boom length of 90m. The equipment mobility is provided by hydraulically-driven walker feet.