walking dragline


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Related to walking dragline: Dragline crane

walking dragline

n
(Mining & Quarrying) a very large-capacity dragline mounted on feet or pads instead of tracks. See dragline2
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
It is a "walking dragline" with a huge claw used to shift thousands of tonnes of rock, sand and clay to expose the underlying coal seams.
The Ace in the Hole is a 1300W Bucyrus-Erie walking dragline that Usibelli purchased in 1977.
The Bucyrus Erie 1550-W walking dragline excavator was dubbed Big Geordie at Radar Opencast site in Widdrington, near Morpeth, where it worked from 1968 until Butterwell Opencast Site nearby was opened a few years later and eventually moved to Stobswood Opencast, where it ended its working days in 1993.
A new P&H model 9020, 5,170 t walking dragline - which will be one of the largest in Australia - is to join a P&H model 4100 electric mining shovel in overburden digging operations at Bulga Coal Management Ltd's Bulga and Saxonvale opencast coal mines in the Hunter Valley, New South Wales.
The Bucyrus-Erie 1300W walking dragline was named by local school children when it began operations at Poker Flats Mine.
Over the next three months, the 3,000-tonne walking dragline excavator will be stripped and cut up.
Big Geordie is officially known as a BE 1550W ( a walking dragline excavator.
It has trucks with a 150-ton capacity and a walking dragline - the largest land-based machine in Alaska - with a bucket that holds 33 cubic yards of material.
Another new introduction is the P&H 9020 walking dragline, which incorporates improved A-frame and front end geometry, precision gearing, and planetary swing and propel transmissions.
By modern standards, the early equipment was remarkably small - in 1944, over half the excavators in use had buckets of less than 3/4 [yd.sup.3] (or [0.75m.sup.3]) capacity, whereas at Stobswood, the latest large site, overburden is stripped by the P&H 757 walking dragline 'Ace of Spades', Europe's largest walking dragline with a bucket capacity of 65 [yd.sup.3] ([50m.sup.3]) and coal is dug using two O&K RH 200 hydraulic shovels and an O&K RH 120 C backhoe, with buckets of 20 [M.sup.3] and [13m.sup.3] respectively.