The Worlds Biggest Machines - Documentary Films Bagger 288 (Excavator 288), developed by the German business Krupp for the energy and mining company .\r
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Related Article: Bertha is a 57-foot-diameter (17.4 m) tunnel boring machine built specifically for the Washington State Department of Transportations (WSDOT) .\r
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BBC, Documentary Construction, Machines #National #Discovery Feel the earth move under your feet and dig into the fascinating story of earthmoving .\r
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The Biggest Heavy Equipment in the World: Earth Movers - HISTORY OF MANKIND DOCUMENTARY Earth mover is amongst the most substantial devices .