83 mm Haggie Ried Double becket Dump Rope change out on a P&H 9020 Dragline.

Wow. It's hard to imagine how large that bucket truly is until you see a D10 parked up against it on a ramp and the D10 looks small.Having done this procedure multiple times myself on a lot smaller draglines (Bucyrus Erie 15-B, 38-B, & P & H 1055), I think that it would have been nice to have some narration about the process and why it needed to be done for those not familiar with machines like this. That cutting torch is interesting.  I live in the "coal region " in PA. When the surface mine closed they abandoned these machines right where they sat. The largest was about the size of the one in the video. It sat mostly instact until about 20 years ago when steel prices jumped and it was worth scrapping. There were several of the drag line buckets that sat in locl scrap yards for years until steel prices rose enough to make it worth cutting them up into shippable sized pieces.

The biggest drag line was known simply as "the crane" and if I remember correctly was manufactured by Bucyrus.  I’m a mine boily and we look after 3 draglines and the way we do dump ropes it similar but a different to what’s in this video. Depends on weather it’s a broken dump rope or just replacing a worn one is to how low we have the sheaves. For a dump ropes that aren’t broken we set the sheaves about 5m of the ground to avoid tangles. All we use the oxy for is to cut out the retaining pins and to pull the becketed end out we use a 1 tonne sling fed up though the dump rope socket. We then pin the new dump rope at one end and then hook it up to the old one with a short chain and pull it though the sheaves. For broken ropes we lower the sheaves so we can get a 3tonne sling though and then feed the new ropes though that way. It’s interesting seeing how different sites go about there dragline rigging though.

Cool I was part of the Engineering team at P&H, Pauline and Harnishfeger, in Milwaukee Wisconsin. We redesigned the arch, teeth, shrouds on the bucket and a guide of the foot on the house. As the foot moves backward it picks up the house just enough to clear the ground the foot lifts moves backward, the guide keeps it from wobbling, then drops down and the cycle starts again. The deadline walks kinda like a turtle. One of the best jobs I had around 1995 to 2000. The machine took 3 years to design and 3 years to build. It went to Australia.