+27 11 494 6000 www.ncm.co.za Patents Apply © New Concept Mining 2016 Fall Of Ground Early Warning Systems The FOGLight and FOGStick early warning devices detect and warn mining crews of potentially unsafe conditions, helping to provide a safer working environment underground. The FOGLight is installed in a hole drilled into the rock above an excavation. Once activated the unit ashes green until movement occurs to trigger the ashing amber warning light. The FOGStick is installed between the oor and roof of an excavation to monitor closure in a working place. The FOGStick activates upon installation and can be removed at the end of each shift and stored safely until the next day. Highly visible green LEDs ash to con rm that closure is within acceptable limits and these switch to ashing red LEDs if excessive closure occurs.