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Results 21 - 30 of 33
Technology News 518 - Super Stopping: A Permanent Solid Stopping for Directing Ventilation Airflows in Large-opening Metal/Nonmetal Mines5/1/2006 - Technology NewsThe Super Stopping is a permanent, long-term ventilation control for large-opening metal/nonmetal mines designed to last for the life of the mine. This report discusses construction of a Super Stopping, as well as successful testing of the stopping at 3...
1/1/2003 - Technology NewsConventional anemometers (e.g., vane) are capable of accurately measuring air velocities only above 100 ft/min. This research investigated other anemometry technology to detect low air velocities in the range of 0-100 ft/min. Two different portable ultr...
2/1/2002 - Conference papersThe ultimate goal of this research is to develop control technologies to reduce worker exposure to respirable silica dust. Dust surveys were conducted in an underground limestone and gold mine to investigate silica dust sources, generation levels, and ...
6/1/2001 - Technology NewsTwo new videos are now being released. Both of these videos were shot completely in operating underground hard-rock mines and used expert miners to tell the story.
Application of Radio-Frequency Identification Systems to Collision Avoidance in Metal/Nonmetal Mines1/1/2001 - Peer reviewed journal articlesNew developments in radio frequency identification (RFID) systems show promise for reducing the number of collisions in mines. This paper describes tests conducted on off-the-shelf RFID systems and the subsequent development of a custom RFID system.
5/1/1998 - Conference papersThe U.S. Mine Safety and Health Administration (MSHA) has identified ore pass hazards as s significant safety problem in underground metal mines in the United States. Researchers at the Spokane Research Laboratory of the National Institute for Occupati...
1/1/1992 - Information CircularsA U.S. Bureau of Mines review of all upper extremity cumulative trauma disorder injuries as reported by law and maintained on the MSHA accident data base from 1985 thru 1989.
Propagation of EM Signals in Underground Metal/Non-Metal Mines: Magma Copper Company - San Manuel Mine4/1/1981 - Contract reportsThis report presents test results, data evaluations, and typical system performance expectations based on wireless electromagnetic propagation measurements performed in the MAGMA Copper Company San Manuel mine near Tucson, Arizona during March 30 throug...
1/1/1981 - Contract reportsThis report describes the results of a measurement and analysis program to characterize wireless radio transmission in metal-nonmetal mines over a wide frequency range from 0.2 to 1,000 mhz and over a variety of mine environments.
This study addresses several engineering and economic facets of possible roll-over protective structure (ROPS) and falling object protection structure (FOPS) requirements in the metal-nonmetal mining industry.