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The Big Muskie was a model 4250-W dragline and was the only one ever built by the Bucyrus-Erie company. [1] With a 220-cubic-yard (170 m 3) bucket, it was the largest single-bucket digging machine ever created and one of the world's largest mobile earth-moving machines alongside the Illinois-based Marion 6360 stripping shovel called The Captain and the German bucket wheel excavators of the ...
Bagger 288 (Excavator 288), previously known as the MAN TAKRAF RB288 [2] built by the German company Krupp for the energy and mining firm Rheinbraun, is a bucket-wheel excavator or mobile strip mining machine. When its construction was completed in 1978, Bagger 288 superseded Big Muskie as the heaviest land vehicle in the world, at 13,500 tons. [3]
Tenova Takraf, a major manufacturer of open cast mining equipment-including the world's biggest Bucket wheel excavator; NASA Astronomy Picture of the Day: Photo of bucket-wheel excavator crossing a road (22 November 2006) "Big Wheels Keep on Turning" - Information about the development of bucket-wheel excavators and similar vehicles.
The medium was water saturated sandy mudstone, schistose mudstone, highly weathered mudstone as well as alluvium. It achieved a maximum advance rate of more than 345 m (1,132 ft) per month. [44] Top view of a model of the TBM used on the Gotthard Base Tunnel. The world's largest hard rock TBM, known as Martina, was built by Herrenknecht AG.
Open-pit mines create a significant amount of waste. Almost one million tons of ore and waste rock can move from the largest mines per day, and a couple thousand tons moved from small mines per day. [6] There are generally four main operations in a mine that contribute to this load: drilling, blasting, loading, and hauling.
For example, Caterpillar's smallest mini-excavator weighs 2,060 pounds (930 kg) and has 13 hp; [8] their largest model is the largest excavator available (developed and produced by the Orenstein & Koppel, Germany, until the takeover 2011 by Caterpillar, named »RH400«), the CAT 6090, which weighs in excess of 2,160,510 pounds (979,990 kg), has ...
Pacific Tek, [4] also founded in 1993, has created the Angled Vacuum Excavator Tank (1997) and the 180° Swivel Mount Valve Operator (1999). In 1998, the Mobile Tiefbau Saugsysteme produced another type of suction excavator. [5] The global market size for suction excavators was estimated to be valued at US$924.7 million in 2020. [6]
Gradually Universal Excavators designed by Bucyrus-Erie replaced Ruston & Hornsby designed models. The original range of standardised rope-operated machines included 10RB, 17RB, 19RB, and 33RB and were upgraded through some intermediate models including the 54RB to a main selling range in the 1960s of 22RB, 30RB, 38RB, 61RB, and 71RB.