Results 11 - 20 of 45

• NIOSH at 2019 Underground Stone Safety Seminar
  10/16/2019 - News and announcements
  See NIOSH at the 24th Annual Underground Stone Safety Seminar, Dec. 10-11, 2019, in Louisville, Kentucky.
• NIOSH at 2018 Underground Stone Seminar
  9/26/2018 - News and announcements
  See NIOSH at the 2018 Underground Stone Safety Seminar, Nov. 13 and 14 in Louisville, KY.
• NIOSH at 2017 Underground Stone Safety Seminar
  10/18/2017 - News and announcements
  See NIOSH at the 2017 Underground Stone Safety Seminar, Dec. 5 and 6 in Louisville, KY.
• Hazard Recognition Challenge
  10/3/2017 - Web software
  Are you up to the challenge? Try your hand at our new web application that challenges users to find the hazards in four locations at a surface stone operation.
• Underground Stone Mine Pillar Design in Challenging Conditions
  3/30/2017 - Research projects
  A project to build the framework for expanding pillar design criteria into challenging environments by undertaking pillar response investigations in representative conditions at case study mine sites.
• NIOSH at 2016 Underground Stone Seminar
  10/27/2016 - News articles
  See NIOSH at the 2016 Underground Stone Seminar in Louisville, KY, on December 6-7.
• Pillar and Roof Span Design in Stone Mines
  1/1/2010 - Peer reviewed journal articles
  Underground stone mines in the United States use the room and pillar method of mining in relatively flat laying deposits. Roof and rib falls account for 15% of all lost time incidents. This paper presents the result of a study to improve pillar and roof...
• A Roof Quality Index for Stone Mines Using Borescope Logging
  7/1/2009 - Conference papers
  A process is presented that relates the structures and their locations to provide a numerical value, or roof quality index that can be used to assess roof stability.
• Pillar Strength and Design Methodology for Stone Mines
  7/1/2008 - Conference papers
  This paper presents a pillar design methodology that was developed from a study of pillar performance in operating stone mines and concludes with guidelines for applying a developed equation and selecting appropriate input parameters.
• Field Observations and Numerical Studies of Horizontal Stress Effects on Roof Stability in U.S. Limestone Mines
  6/1/2008 - Peer reviewed journal articles
  This paper describes a modeling approach that can be used as a tool to evaluate potential roof failure and optimize the stability of room and pillar layouts.