Evaluation and Mapping of Corrosion in a Western USA Underground Metal Mine – Year One Preliminary Results

Details

• Personal Author:
  Benton DJ ; Brennan JT ; Chambers AJ ; Orr DT ; Sunderman CB
• Description:
  Corrosion of ground support can lead to falls of ground, posing a significant risk to miner safety. To address this problem, the Spokane Mining Research Division of the National Institute for Occupational Safety and Health is investigating ground support corrosion at the Greens Creek mine, located near Juneau, Alaska, United States of America. Field and laboratory studies include surveys of weld-wire mesh corrosion, rock mass conductivity measurements, and sample analyses using a scanning electron microscope, energy dispersive spectrometry, and Fourier transform infrared spectrometry. Current field studies demonstrate a correlation of rock mass conductivity to the degree of weld-wire mesh corrosion and the relationship of ground conductivity surveys to support corrosion potential. Laboratory analyses of mine samples identify the presence of sulphate, which is a determinant for sulphate reducing bacteria activity. Identification of sulphate reducing bacteria (SRB) would provide evidence for microbial influenced corrosion in this mine. Ongoing research is evaluating methods of SRB inhibition. These results provide engineers with a means to map corrosion potential of the rock mass, and identify a number of paths for design of focused mitigation efforts for problem areas. [Description provided by NIOSH]
• Subjects:
  Atmosphere Carbon Monoxide Mining Occupational Health Safety Ventilation
• Keywords:
  Author Keywords: Corrosion Bacteria Coatings Corrosion Inhibitors Corrosion Resistant Coatings Electrochemical Reactions Environmental Factors Equipment Reliability Ground-control Ground-stability Ground Falls Laboratory Testing Materials Testing Metal Mining MIC Microbial Influenced Corrosion Microorganisms Mine Safety Mining-industry Oxygen Deprivation Resistivity Rock Bolts Safety SRB Structural Failure Sulfates Sulphate Reducing Bacteria Underground-mining Work Environment

  More +
• Series:
  Mining Publications
• ISBN:
  9780992481063
• Publisher:
  Australian Centre for Geomechanics
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Idaho ; OSHA Region 10 ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  SMRD - Spokane Mining Research Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• NIOSHTIC Number:
  nn:20050210
• Citation:
  Deep Mining 2017: Proceedings of the Eighth International Conference on Deep and High Stress Mining, March 28-30, 2017, Perth, Australia. Wesseloo J, ed. Nedlands, Western Australia: Australian Centre for Geomechanics, 2017 Mar; :785-798
• Contact Point Address:
  A. J. Chambers, National Institute for Occupational Safety and Health, USA
• Editor(s):
  Wesseloo J
• Federal Fiscal Year:
  2017
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  Deep Mining 2017: Proceedings of the Eighth International Conference on Deep and High Stress Mining, Perth, Australia, Mar 28-30, 2017
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:401ae9904965daa2a67523ca607557afb449aa5a4bd3273ce91f540ea2b21027fc42f4734b803e4d1348d9f8b4f335fb1f7eb7dc5597e5c9a9f944754d262e89
• Download URL:
  https://stacks.cdc.gov/view/cdc/228486/cdc_228486_DS1.pdf
• File Type:
  [PDF - 2.95 MB ]