When planar-type, wedge-type catchment and bench failures were found in a highwall at its Marinette Quarry, Specialty Granules LLC wanted to assess the highwall’s stability, identify potential hazards, and garner recommendations to achieve a stable slope and bench configuration for future mining operations at its Kremlin facility.
Barr conducted a comprehensive geotechnical assessment comprised of assessing highwall conditions; documenting joint conditions and orientation; using a high-definition laser scanner to collect topographic and rock-mass data; logging below the pit floor with an acoustic and optical televiewer; collecting rock specimens; and performing several analyses, including kinematic, general stability, plane and wedge failure, rockfall, berm offset, and bench configuration. Our in-depth assessment informed recommendations to the client for highwall and bench slope angles and configuration, best mining practices, and highwall monitoring.
Vice President Senior Geotechnical Engineer
Vice President Senior Mining Consultant