Electromagnetic Resonance Borehole Assay Logging

Details

• Personal Author:
  Cook JC
• Description:
  This study was to identify and evaluate known technologies employing electromagnetic resonance phenomena in solid minerals for their identification and assaying, particularly assay logging of exploratory boreholes. A literature research and study revealed some little-known, nuclear magnetic resonance (nmr) techniques developed by a group at the University of Geneva, Switzerland. These are suitable for use in weak, inhomogeneous magnetic fields. Laboratory nmr tests of numerous U.S. ore minerals showed good identifying signals from phosphates, fluorspar, bauxite, oil shale, and spodumene (lithium) ores, but not from copper, lead, antimony, or manganese ores tested. Use of electron paramagnetic resonance "signatures" for such ores is suggested. A conceptual design for an nmr assay logging system is proposed. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Open File Report
• Document Type:
  Text
• Genre:
  Conference Publications ; Final Contract Report
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DRC - Denver Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-103
• NIOSHTIC Number:
  nn:10001885
• NTIS Accession Number:
  PB-283734
• Citation:
  NTIS: PB 283 734 Available for Reference At Bureau Libraries; :1-103
• Federal Fiscal Year:
  1977
• Performing Organization:
  Teledyne Geotech
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB 283 734 Available for Reference At Bureau Libraries
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:ae5ef7d9c6b9fc0858661ca51d19ef9d00ac3b996717c58ad4956123dd3936e727d6a4625d9239cef5d9353c2b641bffc595d843775db4c23c0ee978c29fb430
• Download URL:
  https://stacks.cdc.gov/view/cdc/206557/cdc_206557_DS1.pdf
• File Type:
  [PDF - 4.19 MB ]