…lot of time working with our customers to ensure that orders are placed with enough lead time. “The average longwall rebuild for Longwall Associates, from the time we bring it from the yard into the shop until we start delivery, is about…
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Experiments to Safely Boost Recovery
…90 seconds. Pilot-scale tests followed, validating the results. Three units in a series were trialed. Testing found that the circuit averaged combustible recovery in the range of 75% at less-than-7% product ash at less than 2 min. residence time, Eriez reported. The…
President Biden’s Vaccine ‘Mandate’
…workforce.” Just a few months ago then, OSHA declined to require the vaccination of healthcare workers who treat COVID-19 patients. Now, the White House has decided that mandating vaccinations or testing is necessary to protect all employees, and it directed OSHA to…
MINExpo is Back
…gas detection and emergency response/mine rescue. Dräger’s highly customizable refuge chambers protect workers by creating a safe, breathable atmosphere within a sealed room. They are designed for prolonged stay, keeping occupants safe until help arrives. The company’s APRs range from full and…
Dependable Secondary Support Systems
…Dutil said. “In recent studies, we can conclusively prove that we are quite cost competitive with the more traditional floor-to-roof support systems,” Dutil said. “The ease of supply chain coupled with the labor it takes to set other supports makes Jennchem J-Cribs…
Moving More Mined Materials to Market
…and tilted.” The stacking method of choice depends on whether the bulk material is only temporarily stored or if it also needs to be blended. “For simple stockpiling without blending, we can use the ‘cone shell method’ where the stacker only moves…
Smarter Bolters May Help Level the Field
…To activate the system, the operator pushes on the feed-and-rotation joystick with one hand, and then pushes the latched drilling handle with the other, the company reported. The drill steel then continues upward as far as it can go or until the…
Pandemic Impacts Longwall Production
…the support is and the potential collision hazards. We can also see convergence during long periods of downtime.” The anti-collision information comes from the inclinometers or tilt transducers and the double-acting rams. “We know the shearer position and size and we can…
X-MAT Receives DOE Funding to Build House Made of Coal
…founder of Semplastics and X-MAT. “Our team has already reimagined coal in unique ways such as the X-TILE, a lightweight, fireproof coal roof tile that can withstand extreme temperatures. Building a house almost entirely from coal is next on our docket. We’re…
Allegiance Enters US Met Market
…years of production, building the balance sheet and consolidating the business, will allow them time to determine the best ramp-up option. The updated study was undertaken by Stantec, who was the lead consultant in the original study. The focus of the work…
Disaster Survivability for Refuge Alternative Relief Valves
…Approval and Certification Center, has developed test methods and evaluated relief valves for their ability to withstand overpressure generated during a survivable mine explosion. Federal Requirements Following passage of the MINER Act, MSHA published its final rule in December 2008 mandating provisional…
Engineering Firms Deliver Efficiency, Savings, Peace of Mind
…shovel material was significantly decreased, which helped decrease overall costs.” With feedback from the miner validating the conclusions, WEIR recommended increasing dragline yardage and reducing the amount of dirt moved by truck-shovel fleets. “Some final design modifications to final drainage were also…
Moving Closer to an Energy Crisis
…far as electric reliability. In the September edition, readers might recall that in this column I wrote about the ridiculous situation in California. The state is mandating all electric cars by 2035, but it can’t keep the lights on in 2020. It…
Cat Launches Next Generation 785 Haul Truck
…new cab air filtration system for operator comfort. The new deluxe seat boasts leather upholstery, air-adjustable bolsters and lumbar support, heated and cooled cushions, dynamic dampening, and a 30° recline with thigh tilt and extension, so it comfortably accommodates operators of all…
Making a Difference for Operators
…“The tiltable cab really reduces maintenance time, as does our new quick-fit system that enables cleaner, faster oil changes on the L260H,” Yeomans said. “We also just extended the oil change interval to 1,000 hours for it and L350h.” A rimpull control…
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