This from MERX:
.... Defence Research and Development Canada - Suffield (DRDC S) has a requirement for the design, acquisition and commissioning of a blast/shock tube. In response to Canadian Forces priorities and requirements, DRDC S has initiated a blast injury program. A focal point of this program will be blast-induced traumatic brain injury. Although there are a number of experimental methods used by the international community, the method that lends itself to the most fidelic physical simulation of a blast wave requires a blast tube apparatus ....
Reference Number PW-$EDM-066-8431
Solicitation Number W7702-115013/AMore in attached Statement of Work - a bit on previous work done here:
http://forums.army.ca/forums/index.php/topic,81013.0.html