Earthmoving, aggregate construction: Large 5+ CY/CM Hendrix draining dragline bucket is operated by Liebherr HS 895 HD Litronic hydraulic open lattice boom 91,000 kg / 400,000 lb capacity crawler crane. A dragline bucket is controlled by three elements: The vertical wire rope above the bucket raises and lowers the bucket either with or independent of the boom raising/lowering. The chain from front of bucket is pulled in and let out by the wire rope operated by a front spindle. The short wire rope attached to the top-front of bucket allows the bucket to pitch front first into the excavation pit, then be pulled upward at end of loading to capture the load. The basic operation is to pull in a load, then release the bucket to swing forward and be lowered to capture the next load. CONEXPO, Las Vegas, Nevada, March 15-19, 2005.