The folks at InSeT Systems want to eliminate mining deaths caused by an inability to locate those trapped under ground. The Akron-based company is fine-tuning its Inertial Sensor Tracking System, which uses inertial technology to provide the most accurate location data available underground. The device will also work any other places GPS can't reach.The mining industry got a push toward additional safety standards in 2006 with the passage of the MINER Act, requiring mining companies to wirelessly track where all of their employees are at all times. The company said that, at the time, no such technology existed on the market. With a product developed, InSeT was poised in early 2010 to begin large-scale testing. While the company employed four, it expected to add as many as 50 by the end of 2012.