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Respirable Dust Levels in Coal, Metal, and Nonmetal Mines

Public Domain


Details

  • Personal Author:
  • Description:
    In 1980 the Bureau of Mines developed the mine inspection data analysis system (MIDAS). MIDAS is a computerized, industrial hygiene data base capable of statistically analyzing environmental data collected in coal and noncoal mines and mills by Mine Safety and Health Administration (MSHA) inspectors or mine operators. The objectives of this report are to describe the current contents of midas, to report analyses of coal and noncoal mine respirable dust samples collected by MSHA inspectors, and to evaluate the proposed change in the metal and nonmetal respirable dust standard from a formula based upon the percentage of quartz identified in the sample to 100 ug/m3 of respirable quartz. Based on samples collected by MSHA inspectors, changing the noncoal respirable dust standard would result in 4 pct fewer samples with dust concentrations exceeding the standard. Analysis of respirable coal dust data collected by MSHA inspectors showed that mines with longwall plows or shears had the highest geometric mean concentrations (1.64 and 1.29 Mg/m3, respectively). Mine operations using continuous rippers outnumbered longwall mine operations about 10 to 1 and had a geometric mean concentration of 0.66 Mg/m3. [Description provided by NIOSH]
  • Subjects:
  • Series:
    Mining Publications
  • Subseries:
    Information Circular
  • Document Type:
    Text
  • Genre:
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Division:
    TCRC - Twin Cities Research Center
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    1-23
  • NIOSHTIC Number:
    nn:10005545
  • Citation:
    Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, IC 9125, 1987 Jan; :1-23
  • Federal Fiscal Year:
    1987
  • Peer Reviewed:
    False
  • Source Full Name:
    Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, IC 9125
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:95a00e36c83cfd11adffb5b8e69f899700994f76f8c7c801f952179ab7f60f0d1d7dd47695cc60a3dfc4e17ce5284e0b8c0bcbd91945fc1bfc5ff8732d318cf3
  • Download URL:
  • File Type:
    Filetype[PDF - 1.38 MB ]
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