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Results 81 - 90 of 214
7/1/2015An article presenting an assessment of the effects that ground control mesh might have on rock and float coal dust distribution in a coal mine.
Shotcrete Design and Installation Compliance Testing: Early Strength, Load Capacity,Toughness, Adhesion Strength, and Applied Quality4/1/2015 - Reports of InvestigationsA report on a research study to document and develop safe practices for the use of shotcrete as ground support in underground mines, particularly in underground metal mines operating in weak host rock.
7/17/2014 - Contracts and cooperative agreementsA capacity-building contract to address ground control design issues in weak rock masses in Nevada.
3/4/2014 - Contracts and cooperative agreementsA contract to evaluate the role of gas desorbing on the failure of coal and the resultant influence on dynamic failures such as bumps, bursts, and outbursts.
8/20/2013 - PC softwareA software program to help select roof bolts for primary support in underground coal mines
8/20/2013 - PC softwareThis installable toolbar provides quick access to seven NIOSH ground control software packages.
6/1/2011 - Technology NewsTo develop a portable field-use testing system for conducting ASTM-1550-05 round determinate panel tests.
6/1/2011 - Technology NewsTo develop a practical method of measuring shotcrete early strength onsite in the first six hours after application using a partial beam test standard, ASTM C 1 16-90.
1/1/2011 - Peer reviewed journal articlesIn recent years, the number of some annual ground fall fatalities has approached zero, indicating that significant progress has been made. However, more progress is needed to reduce injuries caused by rock falling between supports and by rib falls.
Ground and Standing Support Interaction in Tailgates of Western U.S.Longwall Mines Used in the Development of a Design Methodology Based on the Ground Reaction Curve7/1/2010 - Conference papersInstrumented test sites were installed in the tailgates of two western longwall operations; results of the support performance and ground reaction are presented in terms of developed support loads and displacements and tailgate entry convergence.