Results 131 - 140 of 224

• New Support Concepts for Hard Rock Mining Applications
  4/1/2007 - Conference papers
  This paper presents an overview of recent innovations in support technology for hard rock mining.
• Multiple Seam Longwall Mining in the U.S. - Lessons for Ground Control
  2/1/2007 - Conference papers
  Relatively few longwall mines in the U.S. operate under multiple seam conditions where the two seams are less than 200 ft apart. This paper describes the experience of six that do and lessons learned.
• Analysis of Multiple Seam Stability
  1/1/2007 - Conference papers
  Analysis of Multiple Seam Stability (AMSS) is a computer program to help mine planners evaluate potential interactions and reduce the risk of ground failure. This paper details a NIOSH study of multiple seam interactions and the development of AMSS.
• Geology, Ground Control, and Mine Planning at Bowie Resources, Paonia, CO
  8/1/2006 - Conference papers
  Bowie Resources maintains one of the most pro-active ground control programs in the U.S. mining industry today. Everyone in the organization from the miners to top management is involved in ground control. The program is described in detail.
• Twenty-four Conferences; More than One-hundred and Seventy Papers; Understanding Roof Bolt Selection and Design Still Remains Priceless
  8/1/2006 - Conference papers
  This retrospective paper discusses changes in bolt types and usage over the past 24 years, pointing out some of the biggest myths and hailing the most significant advances.
• The Evolution of Intelligent Coal Pillar Design: 1981-2006
  8/1/2006 - Conference papers
  This paper discusses progress in the science of coal pillar design over the past 25 years and some of the current research needs.
• A Retrospective Assessment of Longwall Roof Support with a Focus on Challenging Accepted Roof Support Concepts and Design Premises
  8/1/2006 - Conference papers
  This paper explores the history of longwall shield design over the past 25 years. It also addresses questions such as whether two-legged designs are better than four-legged shields and whether setting pressures should be set as high as possible.
• Development of Ground Response Curves for Longwall Tailgate Support Design
  6/1/2006 - Conference papers
  This paper presents the results of a study into the ground response around tailgate entries using numerical models. The potential exists to develop site-specific tailgate design curves by combining model results with field observations.
• Technology News 517 - New Updates for NIOSH Coal Mine Ground Control Software
  4/1/2006 - Technology News
  Updates to the NIOSH suite of coal mine ground control software are described, including the Analysis of Roof Bolt Systems (ARBS), the Support Technology Optimization Program (STOP), and the Coal Mine Roof Rating (CMRR).
• Technology News 516 - ARMPS-HWM: New Software for Sizing Pillars for Highwall Mining
  3/1/2006 - Technology News
  The use of highwall mining systems has increased substantially in open-pit coal mines. It is used where overburden depth exceeds economical recovery. Highwall stability remains the major safety concern during highwall mining. The Mine Safety and Health ...