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Products of the Oxidative Thermal Degradation of Mine Stoppings and Mine Reinforcing Materials.


PB87191854

Publication Date 1983
Personal Author Paciorek, K. L.; Kratzer, R. H.; Nakahara, J. H.; Ahmed, S. R.
Page Count 134
Abstract The primary objective of the program was to determine the toxic fume and fire hazard of materials used in the construction of mine stoppings and in the sealing and reinforcing of mine ribs and roofs. The materials investigated were silicone, phenolic, and isocyanate-based rigid foams, as well as epoxy and acrylate mine sealants. Of the rigid foams tested, the X-156 urethane foam presented the greatest toxic hazard based on toxic load values, and hydrogen chloride was the main toxic species evolved by this foam. In none of the isocyanate-based compositions was hydrogen cyanide the major component, but its contribution increased with temperature. Of the two mine sealants tested, the latex acrylic coating presented the greater toxic hazard; acetic acid was the main toxic species evolved.
Keywords
  • Mining engineering
  • Thermal degradation
  • Toxicity
  • Reinforcement(Structures)
  • Fire hazards
  • Epoxy(Resins)
  • Sealers
  • Silicones
  • Polyurethane resins
  • Phenolic resins
  • Safety
  • Occupational safety and health
Source Agency
  • Bureau of Mines
NTIS Subject Category
  • 48A - Mineral Industries
  • 71B - Adhesives & Sealants
  • 41I - Job Environment
  • 41F - Joining
Corporate Authors Ultrasystems, Inc., Irvine, CA.; Bureau of Mines, Washington, DC.
Supplemental Notes Sponsored by Bureau of Mines, Washington, DC.
Document Type Technical Report
Title Note Open file rept. 27 Jul 82-30 Nov 83.
NTIS Issue Number 198716
Contract Number
  • J0395008
Products of the Oxidative Thermal Degradation of Mine Stoppings and Mine Reinforcing Materials.
Products of the Oxidative Thermal Degradation of Mine Stoppings and Mine Reinforcing Materials.
PB87191854

  • Mining engineering
  • Thermal degradation
  • Toxicity
  • Reinforcement(Structures)
  • Fire hazards
  • Epoxy(Resins)
  • Sealers
  • Silicones
  • Polyurethane resins
  • Phenolic resins
  • Safety
  • Occupational safety and health
  • Bureau of Mines
  • 48A - Mineral Industries
  • 71B - Adhesives & Sealants
  • 41I - Job Environment
  • 41F - Joining
  • J0395008
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