Check out my videos of Bauma 2013, the biggest construction show in the world. Massive cat excavator being .\r
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Cat 6030 B on display at Minexpo 2012 in Las Vegas convention center.\r
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The Big Muskie was a model 4250-W Bucyrus-Erie dragline (the only one ever built). With a 220-cubic-yard (170 m3) bucket, it was the largest single-bucket .