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Accutron Instruments Inc.
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Mine/industrial ventilation monitoring, improving air quality and lowering costs with vent-on-demand
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Arrow Speed Controls
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Leading developer of speed control for electric motors in North America
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Maestro Mine Ventilation
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Top quality underground ventilation systems that save lives, increase production and conserve energy
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Rocvent Inc.
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Engineered ventilation ducting of all types
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TRANS-F-AIR
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Cooling/heating for all kinds of vehicles and special applications used in mining
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