Well, if you guys want to do experiments with the ground up glass, you'll just need to pick someone to experiment on.  I think you still have some pirate prisoners, but these experiments will likely please Tzeench and give you corruption points.  Of course, there's the possibility of experimenting on animals, though that won't give you quite the data you need.  The main problem is whether or not the glass becomes harmless after a while, or whether it remains lethal forever.<br/><br/>Adapting the weapon for use against the Tyranids and turning back the swarm could result in an<em>incredible</em>profit, though that mean an extended detour from the Mextil cluster.  The Tau could be very helpful in figuring out how to build an anti-tyranid weapon, as well as getting you a hive fleet to attack.<br/><br/>Also, as a spoiler, you might end up having to fight starship scale organic beings in the Mextil Cluster, in which case glass-9 torpedoes would be handy.