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9/1/1985 - Contract reportsPresents the preliminary safe distances for blasting wiring from typical electromagnetic sources. The distances are for underground coal mines and electromagnetic sources in the frequency range below 10 mhz.
Safe Distances for Blasting Wiring from Commonly Encountered Underground Electromagnetic Energy Sources9/1/1983 - Contract reportsThe use of electromagnetic field producing equipment in underground coal mining operations can only be expected to grow. The use of these equipment in underground mining operations is hampered by the possibility of their electromagnetic fields interacti...