Thanks I have found them due to the help of a fellow commander in this thread.
While getting back into the game I also noticed that a lot of my engendering materials seems to be missing. Is there any possibility that this happened?
There should be no way that you simply "lose" materials. It could be that you spent them and didn't remember, or you used them for something else, lots of different possible reasons! :)
- CMDR Zenit