As ace stated, we are still in the process of uploading drawings. This is an ongoing project that has taken the uploading team months due to the large number of drawings.
The USN section being empty is mostly my fault as I had told the guys I would be handling it myself, but due to real life constraints (as well as the decision to spend my free time producing more drawings...) it has remained unfilled.
The archive will be completely filled soon.
Sorry to hear that. Good luck with it all.