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Mining Publication: Evaluation and Determination of Sensitivity and Electromagnetic Interactions of Commercial Blasting Caps
Keywords: Blasting Blasting caps
This page is archived for historical purposes and is no longer being maintained or updated. Contact NIOSH Mining if you need an accessible version.
Original creation date: September 1973
Authors: RH Thompson
Contract/MOA Report - September 1973
Download PDF Document (6.40 MB)
NIOSHTIC2 Number: 10010042
The Franklin Institute Research Laboratories. U.S. Department of the Interior, Bureau of Mines, Contract No. H0210068. NTIS No. PB/236-119, 1973; :1-210
Six different types of blasting caps, mainly of the type used in coal mines, were evaluated to determine both their radio frequency and direct current characteristics. Two of the caps were of foreign manufacture. All of the American made caps had "no-fire" (0.1 pct firing probability with 95 pct confidence, as determined by the Bruceton test) levels above 0.04 watts. One of the caps of foreign manufacture had a "no-fire" level of 0.023 watts. A worst case analysis of blasting cap pickup of radio frequency power in coal mines was performed, and safe distance curves were generated.
Image of publication Evaluation and Determination of Sensitivity and Electromagnetic Interactions of Commercial Blasting CapsContract/MOA Report - September 1973
Download PDF Document (6.40 MB)
NIOSHTIC2 Number: 10010042
The Franklin Institute Research Laboratories. U.S. Department of the Interior, Bureau of Mines, Contract No. H0210068. NTIS No. PB/236-119, 1973; :1-210
See Also
Blast Wave Propagation in Underground Mines
A Century of Bureau of Mines/NIOSH Explosives Research
Fatal Accidents Due to Flyrock and Lack of Blast Area Security and Working Practices in Mining
A Gas Pressure-Based Drift Round Blast Design Methodology
A Hydrodynamics-Based Approach for Predicting the Blast Damage Zone in Drifting as Demonstrated Using Concrete Block Data
Low Temperature Limits for Mixing Recycled Oil, Diesel Fuel, and Ammonium Nitrate to Make ANFO-Type Blasting Agents
Safe Distances for Blasting Wiring from Commonly Encountered Underground Electromagnetic Energy Sources
A Summary of Fatal Accidents Due to Flyrock and Lack of Blast Area Security in Surface Mining, 1989 to 1999
Technology News 522 - Blast Area Security: Flyrock Safety
Toolbox Training on Flyrock Awareness
Page last reviewed: November 18, 2015
Page last updated: November 18, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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