Mackay, Steven D.2015-10-292015-10-292009-11-18http://hdl.handle.net/10919/62556The Virginia Tech mining and minerals engineering department has received a $1.24 million, five-year contract by the National Institute for Occupational Safety and Health (NIOSH) to study the effects of roof falls, bumps, or explosions on underground mine ventilation systems.text/htmlIn CopyrightCollege of EngineeringMining engineering department to lead $1.24M underground mine ventilation studyPress releaseVirginia Tech. University Relations