Editing Dragline excavator (section)

==Notable examples==
{{expand section|more of the largest dragline examples, ideally in an easy to reference table as in the [[Power_shovel#Notable_examples|Power Shovel]] page|date=February 2024}}
[[File:Dragline Walking Mechanism.JPG|thumb|upright=1.2|The walking mechanism on a preserved [[Bucyrus-Erie]] 1150 dragline in the UK]]

The coal mining dragline known as [[Big Muskie]], owned by the Central Ohio Coal Company (a division of [[American Electric Power]]), was the world's largest mobile earth-moving machine, weighing 13,500 tons and standing nearly 22 stories tall.<ref>{{Cite web|url=http://little-mountain.com/bigmuskie/|title = The Big Muskie – Remembering the walking giant}}</ref> It operated in [[Muskingum County, Ohio|Muskingum County]], in the U.S. state of [[Ohio]] from 1969 to 1991, and derived power from a 13,800 volt electrical supply. It was dismantled for $700,000 worth of recycled metal in 1999.

The British firm of [[Ransomes & Rapier]] produced a few diesel-electric excavators rather over 1/10th its size, the largest in Europe in the 1960s at 1400-1800 tons. One, named ''[[Sundew (dragline)|SUNDEW]]'', was used in a quarry from 1957 to 1974. After its working life at the first site in [[Rutland]] wrapped it walked {{convert|13|mi|km}} in 9 weeks to [[Corby]], where it continued on till being scrapped from January to June 1987.

Smaller draglines were also commonly used before hydraulic excavators came into common use, the smaller draglines are now rarely used other than on river and gravel pit works. The small machines were of a mechanical drive with clutches. Firms such as [[Ruston (engine builder)|Ruston]] and [[Bucyrus-Erie|Bucyrus]] made models such as the RB10 which were popular for small building works and drainage work. Several of these can still be seen in the English [[The Fens|Fens]] of [[Cambridgeshire]], [[Lincolnshire]] and parts of [[Norfolk]]. Ruston's are a company also associated with drainage pumping engines. Electric drive systems were only used on the larger mining machines, most modern machines use a diesel-hydraulic drive, as machines are seldom in one location long enough to justify the cost of installing a substation and supply cables.