Results 21 - 30 of 60

• Facility for Melting Residues From Municipal Waste Combustion: Design Criteria and Description of Equipment
  1/1/1993 - Reports of Investigations
  The U.S. Bureau of Mines, under a Memorandum of Agreement with the American Society of Mechanical Engineers (ASME), established design criteria for a facility to melt residues from municipal waste combustion.
• Behavior of Simulated Longwall Gob Material
  1/1/1993 - Reports of Investigations
  This report presents results of a U.S. Bureau of Mines study of longwall gob material. The objective of this work was to determine material stiffness properties of the gob for use in numerical models or rock mass response to longwall mining.
• Extended Cut Face Ventilation for Remotely Controlled and Automated Mining Systems
  2/1/1992 - Conference papers
  U.S. Bureau of Mines research is studying ways to more effectively ventilate extended cuts. Two face ventilation techniques that utilize either blowing brattice or a jet fan for deep cutting are examined in this paper.
• Hybrid Fiber-Optic Electrochemical Carbon Monoxide Monitor
  1/1/1992 - Reports of Investigations
  The U.S. Bureau of Mines has developed an intrinsically safe carbon monoxide (CO) monitoring system for mines by coupling a fiber-optic data telemetry system with a prototype electrochemical CO monitor.
• The Availability of Primary Copper in Market Economy Countries: A Minerals Availability Appraisal
  1/1/1992 - Information Circulars
  A U.S. Bureau of Mines study on the potential availability of copper from 204 mines and deposits in market economy countries.
• Performance of RETIMET Metal Foam Vents on Explosion-Proof Enclosures
  1/1/1992 - Reports of Investigations
  The performance of RETIMET metal foam as a flame arrester on explosion-proof enclosures was investigated by the U.S. Bureau of Mines both in laboratory tests and at the U.S. Mine Safety and Health Administration's (MSHA's) Approval and Certification Cen...
• Frictional Ignition of Natural Gas-Air Mixtures by Alternative Coal-Cutter Bit Shank Materials
  1/1/1992 - Reports of Investigations
  The Bureau of Mines tangentially impacted potential coal-cutter bit shank materials against sandstone to investigate the potential of the materials to ignite natural gas by a friction-generated hot streak.
• Research Toward Direct Analysis of Quartz Dust on Filters Using FTIR Spectroscopy
  1/1/1992 - Information Circulars
  A U.S. Bureau of Mines investigation of Fourier transform infrared (FTIR) spectroscopy for on-filter analysis of respirable dust.
• Examination of Design and Operation Practices for Longwall Shields
  1/1/1992 - Information Circulars
  This report examines shield design, operation practices, and the consequences for using high-capacity shield support systems. An optimization goal is to minimize support loading by using an active shield setting force compatible with strata behavior.
• Bending Fatigue Tests 2 and 3 on 2-Inch 6x25 Fiber Core Wire Rope
  1/1/1992 - Reports of Investigations
  The U.S. Bureau of Mines established a wire rope research laboratory to examine the factors that affect the life of wire rope. The tests indicated that once a wire rope nears the end of its service life, both deterioration and the consequent loss of ro...