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Technology News 520 - a method to characterize risk associated with mine roof conditions.

Pittsburgh, PA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 2007-104 (TN 520), 2006 Oct; :1-4
NIOSH research in underground stone mines has provided the framework for developing a Roof Fall Risk Index (RFRI). This method is centered on examining the defects contained in the roof caused by a wide range of local geologic, mining, and stress factors. The RFRI is based on observations and should be considered part of an overall strategy deployed by mining operations to assess the risk of roof falls. Clearly more information leads to less uncertainty and potentially reduces the risk associated with ever-changing mining conditions. NIOSH's aim is to develop a method to help mine safety personnel identify and track changing roof conditions. The RFRI is an assessment technique that can be used to rate roof fall risk in important parts of a mine or potentially the entire mine property. It should also be viewed as a powerful communication tool that helps to track changes in roof conditions. In addition, it can be used as a training method to help less experienced miners identify defective rock conditions. Lastly, decision-makers can use the RFRI to examine changes in mining conditions and to help develop plans for proactive actions during the course of mine development.
Mining-industry; Rock-bursts; Rock-falls; Geology; Underground-mining; Stone-mines
Publication Date
Document Type
Numbered Publication; Technology News
Fiscal Year
Identifying No.
DHHS (NIOSH) Publication No. 2007-104; TN-520
NIOSH Division
Priority Area
Disease and Injury: Traumatic Injuries
Source Name
National Institute for Occupational Safety and Health
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division