Dragline excavator Wikipedia
After the merger with Monighan in 1946, Bucyrus began producing much larger machines using the Monighan walking mechanism such as the 800 ton 650B which used a 15yard bucket. Bucyrus'' largest dragline was Big Muskie built for the Ohio Coal Company in 1969. This machine featured a 220yard bucket on a 450foot boom and weighed 14,500 tons.