Kray Luxbacher, Virginia Tech (IMAGE) Virginia Tech Caption Kray Luxbacher of the Virginia Tech mining and minerals engineering department has received a $1.24 million, five-year contract to study the effects of roof falls, bumps, or explosions on underground mine ventilation systems. Phase 1 will consist of developing project tools, such as a computer program which will allow multiple users to employ computational fluid dynamics modeling, and an experimental apparatus for testing tracer gases. Credit Virginia Tech Photo Usage Restrictions Photo may be used with report of Dr. Luxbacher's research. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.