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 .\r<br>\r<br>The Largest Walking Dragline Compilation.\r<br>\r<br>Discovery Channels Mega-Excavators visits a strip mine in Wyoming to watch the Ursa Major dragline in action. Ursa Major is the largest dragline excavator in .\r<br>\r<br>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 .
