Results 111 - 118 of 118

• Use of Vertical Boreholes for Assisting Ventilation of Longwall Gob Areas
  3/1/1969 - Technical Progress Reports
  An experimental degasification program using a vertical borehole and vacuum pump to drain gas from the gob area of a longwall panel was successful at Bethlehem Mines Corporation, Cambria Division, No. 33 coal mine. Sixty-one million cubic feet of methan...
• Introduction to Mine Ventilating Principles and Practices
  1/1/1960 - NIOSH/USBM numbered publications
  This bulletin is written to explain in layman language the basic laws and fundamentals of mine airflow and their application to the solution of common ventilating problems. The attempt is to reduce the complex and difficult ventilating formulas to simpl...
• AQE - Air Quantity Estimator
  12/8/2022 - PC software
  Use the Air Quantity Estimator to gauge the air quantity needed to dilute diesel particulate matter (DPM) in an underground large-opening mine. Now in 2.0!
• Technology News 514 - The Air Quantity Estimator (AQE): A New Computer Software Tool for Large-opening Mine Ventilation Planning
  3/1/2006 - Technology News
  A combination of engineering, administrative, and ventilation controls will eventually be required in many large opening mines in the United States to meet the regulatory DPM concentration limits. The AQE is a tool for mine planners to use to estimate s...
• MFIRE Users Manual Version 2.20
  8/1/1995 - Unpublished documents and reports
  MFIRE is a computer simulation program that performs normal ventilation network planning calculations, and dynamic transient state simulation of ventilation networks under a variety of conditions. This user manual describes the development of MFIRE, the...
• Specialized Fortran Computer Programming and Analysis Services to Upgrade Capability of MFIRE Program
  12/1/1994 - Contract reports
  This report is a summary of the work accomplished during the performance of the project titled "Specialized Fortran Computer Programming and Analysis Services to Upgrade Capability of MFIRE Program". This project investigated and corrected algorithm con...
• Engineering Factors in the Ventilation of Metal Mines
  1/1/1935 - NIOSH/USBM numbered publications
  In the belief that the quickest and cheapest method of obtaining effective ventilation of metal mines with regard to air conditions that promote efficiency, health, and safety is through more general application of the engineering factors involved rathe...
• Coal-Mine Ventilation Factors
  1/1/1929 - NIOSH/USBM numbered publications
  Ventilation has been a primary problem in coal mining since mines were first worked under sufficient cover to encounter inflammable or other noxious gases. This report describes testing done to determine how volumes of air be taken from the atmosphere