Coal Age

DEC 2012

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prairie state continued Underground, PSEC goes the extra mile by bolting and meshing the top to ensure safety. After it's mined, it may be burned within six to eight hours. If they are running at a full 1,600 mw, they can burn a full shift's production in eight hours. So we are constantly producing as much as possible to enable a large stockpile to be maintained and to give the plant all it needs to run comfortably," said Paul Krivokuca, senior vice president, PSEC. PSEC continuous miner super-sections each operate within split "fish-tail" ventilation. They also have three roofbolters on every section. Two of those units are Roof Rangers, and one is a walk through bolter with both angle and truss bolt capability. PSEC uses virtually all JoyGlobal equipment except for in the rubber-tired fleet. The feeder-breakers, ram cars and belt structure is all JoyGlobal or JoyGlobal-affiliated equipment. "The investment with JoyGlobal was more than $160 million," said Krivokuca. PSEC has installed a mesh roof throughout the mine, especially along the mains and places designed to be traversed for the next 15 to 30 years. "We are meshing throughout and evaluating our roof as we go forward. We anticipate in the northern part of the mine that we will have more of a sandstone roof, making the top stronger, so we can do less meshing there in time. Production-wise, the ultimate goal for us is 6.5 million to 7 million raw tons per year. The higher the quality of product we give them, the better. We're budgeted for only 12-in. out of seam dilution, with the goal being to send the highest Btu product we can. We take very little reject out of the raw coal breaker. Optimally the calorific value is around 8,700 Btu/lb. We're currently producing between 8,500 to 8,700 Btu/lb with company profile - paid advertisement THE CINCINNATI MINE MACHINERY COMPANY 2950 JONROSE AVE. – CINCINNATI OHIO 45239 PHONE: 513-728-4040 THE CINCINNATI MINE MACHINERY COMPANY is a fourth generation, family-owned business, recognized worldwide for products that combine high performance, reliability, and trouble-free service life for all your cutting and conveying needs. Cincinnati Mine Machinery has a simple philosophy. By working together with our customers, we can complement your capabilities, provide a fresh and different perspective, and help you achieve maximum success. Our entire team is committed to customer satisfaction. In fact, the close working relationships we've developed with our customers have resulted in over 50 patents…many which are industry standard today. Experience underground and sound engineering principles add up to the best value that people and technology can deliver. For the past eighty years, we have worked together with all of the major Original Equipment 40 FAX: 513-728-4041 Manufacturers to develop solutions to a safer, more productive tomorrow. Today, the innovative spirit continues at CMM. We have several new products we're developing now, with the main focus on conveyor chains. We have the strongest chains in the industry, and our new designs will make them even stronger by 20%. We have developed a conveyor chain for the high wall miners, crawler chains for a variety of continuous miners, a tramming-conveying chain for continuous haulage systems, quick change foot shaft and stub shaft assemblies. Our reputation continues to serve us well as we strive to maintain leadership in a challenging, competitive climate. We have a keen sense of responsibility for every product we sell, every process we operate, and every concept we bring to market. We are proud to present our new DA-350 chain. The DA-350 has proven itself in the field on a variety of manufacturers continuous miners. With well over a hundred chains in operation, The DA-350 chain is gaining market acceptance by offering, a quieter chain with improved life and strength due to its robust design. December 2012

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