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Operating Ideas

By T. Anthony Toney and Paolo Bozzato The goal of the coal preparation professional is to minimize the cost of producing the product while maximizing profitability. However, many times cost saving...
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Legally Speaking

By R. Brian Hendrix None of us are perfect. In every human endeavor, mistakes are made, for all sorts of reasons. Mine operators and miners make mistakes, and so do Mine Safety and Health...
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From the Editor

By Steve Fiscor During early July, the Heartland Institute hosted the Ninth International Conference on Climate Change (ICCC) in Las Vegas. A total of 64 speakers - mostly scientists, economists and...
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Transport Tips

By Charlotte Cox and Darren Epps, SNL Energy  Powder River Basin (PRB) coal deliveries in the upper Midwest declined during the first three months of the year compared to the previous two years...

Awards

The World Coal Association has presented Gregory H. Boyce, chairman and CEO of Peabody Energy, with the 2014 Chairman’s Special Award in...
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M-Class Mining Completes Slope Conveyor Installation


M-Class Mining recently installed two 84-inch slope conveyors at its Sugar Camp Energy underground coal mine in southern Illinois. Both of these conveyors are rated at 10,000 tons per hour (tph). The hardware supplied by Joy Mining Machinery. The Slope A conveyor, 3,480-ft long with a 475-ft vertical lift is powered by a 8,000-hp four pulley remote drive with a 150 hp constant tension vector winch electric take-up. The take-up is installed near the Slope A tail end which is half the distance from the surface to the coal seam.

 

The Slope B conveyor, 3,750-ft long with a 300-ft vertical lift is powered by a 6,000-hp four pulley remote drive with a 150 hp constant tension vector winch electric take-up. The take-up is located near the tail end in the coal seam. The Slope B conveyor discharges onto the Slope A conveyor midway down the mine slope at a 171˚ transfer angle.

Both slope conveyors include 72-inch diameter by 93-inch face width drive and discharge pulleys weighing up to 77,000 lb each. The take-up and tail pulleys are 60-inches in diameter with a 93-inch face width.

All of the surface conveyors at Sugar Camp Energy were also included in Joy’s scope of supply. The surface conveyors include an 84-inch wide raw coal stacker, a 60-inch plant feed conveyor, a 72-inch clean coal collecting conveyor and clean coal stacker conveyor, a 60-inch refuse collecting conveyor with 42-inch sub-refuse conveyors, and a 72-inch wide train load out conveyor. All of the surface conveyors have been operating since May 2010.

Conveyor systems for all underground operations are also part of this project and will be installed as mine plans are implemented.  Mainline conveyors will be 72 inch (183 cm) systems and longwall panel conveyors will be 60 inch (152 cm) systems.

Components for all conveying systems were manufactured at Joy’s plants in Winfield, Ala., and Salyersville, Ky.

Joy Mining Machinery, a subsidiary of Joy Global Inc., is a global leader in the development, manufacture, distribution and service of underground mining equipment for the extraction of coal and other bedded materials.