…United States Bituminous Coal Commission in 1920, and averaging 27 percent above the war time scale…Another truce extended these rates until April 1, 1924. By the Jacksonville (Fla.) compact signed a year ago last February these rates are to be continued until…
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Modern Longwall Mining
…4-ft T3 channel. The continuous miner sections use a Fletcher center bolter that tilts to bolt and mesh the ribs. They also have the tilt bolters on the continuous miners. Bolters have also been mounted on the loaders. “While the shuttle car…
Hydraulic Traction Drive Prevails at Steep Inclines
…the machine more gently forward to relieve the cutter motors of load just until their currents drop off peak and return to normal level. The main hydraulic pump (See Figure 1, No. 8) is a variable displacement pump driven by a 125-kW…
Last Saar Coal Mine in Germany Closes
The Bergwerk Saar coal mine in Ensdorf, Germany, was shut down June 29, 2012, Getty reported. Operated by RAG AG, Bergwerk Saar is the last mine in the Saar region that has a mining tradition dating back to 1730. Together with the…
Blair Athol Mine to Finish Production
…to finish production,” he said. “Coal mining has a long and proud history at Blair Athol, dating back to the late 1800s when coal was first discovered in this area. At its peak, the Blair Athol mine was Australia’s largest exporter of…
UMWA Expresses Concerns about Patriot Bankruptcy
UMWA International President Cecil E. Roberts addressed the union leaders, updating them on the status of the bankruptcy filing and explaining what the process will likely be moving forward. Roberts pledged that “the UMWA will bring every resource to bear on behalf…
Diesel Exhaust in Miners Study Clouds the Air
…(NIOSH) and the National Cancer Institute (NCI),1 released the Diesel Exhaust in Miners Study (DEMS) in 2012, a deeply flawed and expensive endeavor to examine the potential health effect of diesel exhaust exposure on miners working in nonmetal mines dating back over…
Addington Loses Bankruptcy Fight
…the case to a straight Chapter 7 liquidation. In granting the U.S. trustee’s request, Scott overruled an objection by the liquidating trustee of the Appalachian Fuels Creditors Trust to allow the case to remain in Chapter 11. The liquidating trustee had argued…
High-tech Solutions Relieve Pressure on Mine Planners
…software used to develop models in a feasibility study may not be suitable for the production environment. Updating mine plans with new data from the field—Mine planning and scheduling has traditionally been such a time-consuming, labor-intensive process that it prohibits the timely…
Addington Hopes to Restructure Debt
…certainly lead to higher recovery to creditors than would protracted litigation whereby the only parties who would benefit would be the respective counsel.” Mallory disputed assertions by the liquidating trustee in the case that Addington, who underwent multiple surgeries after being diagnosed…
Finding a Perfect Balance
…rock is encountered, a tricone may be needed to penetrate the formation. The Atlas Copco Secoroc Grizzly Paw bit allows the driller to penetrate glacial till and overburden to the coal seam. Drilling in the PRB generally requires less than 200 ft…
Enhanced Technology for Blocked Chute Detection
…tilt switch, either mercury filled or its newer non-mercury version). In addition to the “contacting type devices” there are also the nuclear- or microwave-based detection systems, which have no entry into the chute. But now there is a new member of the…
Indian Coal Production to Increase by 2016-17
Indian Minister of State for Coal Pratik Prakashbapu Patil said the projection is based on obtaining necessary clearances and availability of requisite land for coal mining, “Of this, Coal India’s contribution is expected to increase by more than 39% to 615 million…
Tracks & Treads: Dozers and Loaders Dig into Production Support Roles
…new lift arms, lift and tilt cylinders, tilt links and counterweight material. The additional lift height allows the operator to back away from a truck without racking back the bucket, providing the potential for faster cycle times. The additional lift also enables…
Indian Coal Imports Likely to Reach 200 million mt by 2017
The demand will increase further as we are setting up new power plants. It is expected that we will have to import 194 million mt of coal in 2017,” said Pratik Prakashbapu Patil, Minister of State for Coal. “There will be more…
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