It would be a good idea for you to not discuss HMTD on FR or anywhere else on the web (post #11).
It is relatively common knowledge to anyone who does anything but the barest research, nobody looks at FR for advice on explosive selection, and mentioning that it exists hurts nothing and nobody.
More succinctly, HMTD uses the same organic base as RDX (used in plastic explosives) and HMX, and anyone doing research on that family of explosives will see them linked -- Google returns 2000 results for an intersection of RDX and HMTD. Let's not over-react here.
We adapt to information better than our enemy does. It is better that knowledge is out there.
Well, I don't know which hall you were assigned to watch but I do know that if it comes down to even the least informed being the most concerned and the free dissemination of knowledge is compromised by the timorous, then I must conclude that the terrorists have won.
If it is already in the Anarchist's Cookbook, as indicated by poster of #11, isn't that already common knowledge? (I really don't know.)