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https://www.cdc.gov/niosh/mining/UserFiles/works/pdfs/araol.pdf
A RETROSPECTIVE ASSESSMENT OF LONGWALL ROOF SUPPORT WITH A FOCUS ON CHALLENGING ACCEPTED ROOF SUPPORT CONCEPTS AND DESIGN PREMISES Thomas M. Barczak, Mining Engineer NIOSH-Pittsburgh Research Laboratory Pittsburgh, PA, USA 1 Mention of company name or product does not constitute endorsement by
https://www.cat.com/en_US/products/new/equipment/underground-longwall/roof-supports/18346354.html
With superior availability and unparalleled quality in design and production, our roof supports set the standard in longwall mining. This site uses and sets "cookies" on your computer to help make this website better by keeping the site reliable and secure, personalizing content and ads, providing social media features, and analyzing how the ...
https://www.cdc.gov/niosh/mining/UserFiles/works/pdfs/lsasg.pdf
controlled by the support. The goal is to maintain support stability and roof support capability as convergence inevitably continues. With this background, this paper will evaluate the “bigger-is-better” design philosophy for longwall shields and standing roof support systems. The conventional support design approach
https://mining.komatsu/product-details/powered-roof-supports
Joy powered roof supports, for high-capacity longwall applications, are custom designed to meet your exacting cycle and operating requirements: Ratings up to 1,750 tonnes ; ... The structural design of the powered roof supports is respected throughout the mining industry for …
http://s7d2.scene7.com/is/content/Caterpillar/C841461
Roof Supports Customized Design Caterpillar is the world leader in longwall roof support technology. In the early 1970s, demanding mining conditions in German coal mines set the stage for extensive R&D in roof support technology. Steeply inclined coal seams both thick and
http://s7d2.scene7.com/is/content/Caterpillar/C841089
Roof Supports for Special Applications Caterpillar has extensive experience in the design of shield supports for specific mining conditions and for soft-rock longwall applications other than coal. Steep-seam supports and supports with articulated forepole extension canopies and high tip loads have been developed for extreme geological situations.
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