Results 61 - 70 of 113

• Comparing Measurements of Carbon in Diesel Exhaust Aerosols Using the Aethalometer, NIOSH Method 5040, and SMPS
  4/1/2007 - Peer reviewed journal articles
  The objective of this paper is to compare the results among (1) a NIOSH published standard to determine the mass of EC and OC on filter samples, (2) the aethalometer, which uses light extinction to measure "black carbon" or BC, and (3) measuring particl...
• Characterization of Nanometer and Ultrafine Diesel Aerosols in the Underground Mining Environment
  4/1/2007 - Conference papers
  This paper identifies and characterizes nanometer and ultrafine aerosols emitted by diesel engines in the underground environment and evaluates the effects of selected contemporary control technologies.
• Dangers of Toxic Fumes from Blasting
  1/1/2007 - Conference papers
  This paper reviews the potential hazards from toxic fumes produced by detonating explosives in surface mining and construction operations. Techniques to protect workers and the public from the hazards of explosive-related toxic fumes are discussed.
• CO Dispersion from a Coal Fire in a Mine Entry
  6/1/2006 - Conference papers
  Five mine fire experiments were conducted in a 2.08-m-high, 2.90-m-wide ventilated mine entry in NIOSH's Safety Research Coal Mine to determine the effect of the dispersion of carbon monoxide (CO) on mine fire detection.
• Computational Fluid Dynamics Study on the Ventilation Flow Paths In Longwall Gobs
  6/1/2006 - Conference papers
  This paper focuses on the flow patterns within the gob under three different ventilation systems: one-entry and two-entry bleederless systems, as well as a three-entry bleeder system.
• Forecasting Gas Emissions for Coal Mine Safety Applications
  6/1/2006 - Book chapters
  This chapter provides guidelines for determining the gas content of coalbeds, estimating the gas-in-place, and predicting gas flow and emissions before and during coal mining operations.
• The Effects of Water Spray Placement for Controlling Respirable Dust and Face Methane Concentrations
  4/1/2006 - Peer reviewed journal articles
  A series of laboratory evaluations examined the impact of water spray pressure, curtain setback distance, and external and underboom spray use for controlling respirable dust levels and sulfur hexafluoride tracer gas concentrations around a continuous m...
• Methods to Determine the Status of Mine Atmospheres - an Overview
  4/1/2006 - Conference papers, Peer reviewed journal articles
  This paper serves as an overview to remind and/or instruct readers about gas-sampling methodologies and gas analyses to assist in determining the status of underground atmospheres.
• Nitrogen Dioxide Calibration Standards for Portable Monitors
  12/1/2005 - Information Circulars
  The purpose of this study was to compare calibration gas cylinders having balance gases of nitrogen or air that are commonly used to calibrate portable NO2 gas monitors. Because even low concentrations of NO2 can have an extremely adverse effect on ind...
• Fugitive Carbon-Based Gases: Blasting Related or Not
  2/1/2004 - Conference papers
  This paper discusses elements of a stray gas investigation and the analyses necessary to identify the source of a stray gas.