Results 481 - 490 of 646

• Effects of Water Sprays Used With a Machine-Mounted Scrubber on Face Methane Concentrations
  2/1/2001 - Conference papers
  Past studies with blowing face ventilation systems have shown that using a machine-mounted scrubber and water sprays can reduced methane levels at the face.
• An Active Proximity Warning System for Surface and Underground Mining Applications
  2/1/2001 - Conference papers
  NIOSH has developed an active proximity warning system called HASARD (Hazardous Area Signaling and Ranging Device) for warning workers as they approach known dangerous areas around heavy mining equipment and other dangerous work zones.
• Using Fault-Tree Analysis To Focus Mine Safety Research
  2/1/2001 - Conference papers
  One recurring mine safety problem - a dozer falling into a void over a drawpoint on a coal surge pile - was analyzed using fault tree analysis software on a personal computer. The analysis identified basic and intermediate events that led to the burial ...
• Laboratory Evaluation of Shield Dust Entrainment in High-Velocity Airstreams
  2/1/2001 - Conference papers
  Laboratory test to simulate dust liberation during shield movement were conducted.
• Feeding the Multitudes - How to Connect With Customers
  2/1/2001 - Conference papers
  A discussion of existing minerals education activities and tips for developing successful programs.
• Development of NIOSH Hard-Rock Safety Training Materials
  2/1/2001 - Conference papers
  A description of the development process and results of safety training projects.
• Flyrock Issues in Blasting
  2/1/2001 - Conference papers
  A compilation of the primary causes of flyrock in surface mining blasting operations and reasons a safe blast area was not secured.
• New Tools To Monitor Personal Exposure To Respirable Coal Mine Dust
  1/1/2001 - Conference papers
  The compliance sampling method for coal mine dust in the United States has not changed appreciably in the last 30 years. A call for more frequent sampling with immediately available results is leading to new instruments that may supplement or replace th...
• Factors Affecting Fumes Production of an Emulsion and ANFO/Emulsion Blends
  1/1/2001 - Conference papers
  Study of toxic fumes produced by the detonation of ANFO/emulsion blends. An extension of previous ANFO fumes production research that includes an emulsion blasting agent.
• A Comparative Evaluation of the Differential-Pressure-Based Respirable Dust Dosimeter with the Personal Gravimetric Respirable Dust Sampler in Underground Coal Mines
  1/1/2001 - Conference papers
  This paper presents the results of a side-by-side comparison of the respirable dust dosimeter and gravimetric respirable dust sampler in a controlled experimental environent in the laboratory and in underground coal mines under normal operating conditions.