X-13 Research Facility

The X-13 research facility is a location on the westernmost border of the Big MT.

Layout
The first section is comprised of three labs, each containing a part of the stealth suit Mk II. The second section has two levels. the top level is an observation point for researchers and the lower level is a test track for the stealth suit Mk II.

Notable loot

 * Stealth suit Mk II
 * Protonic inversal axe found in the hard-locked Stealth Test Area #2 (VR Simulation Room).
 * X-8 kennel key in a suitcase in a room with a force field covering the door to your right upon entry.
 * 2 Chinese Army: Special Ops Training Manuals: One is in the reward safe upon completion of all the stealth suit tests, and the other is located on the floor, opposite the door in the room where you acquire the chest plate for the sneak suit.
 * K9000 Mod - Resla roil Bathroom observation area terminal has this.
 * Information about Auto-doc upgrade: Implant Y-7 is stored in the terminal just left upon entering office observation area #1 (not to be confused with office observation area #2). You can find the office observation area #1 by entering the reception observation area, and going straight to the other side of the room, where you will find a door with a sign on the floor reading "office observation area #1".
 * 2 Nuka-Cola Victorys: One is located underneath a chemistry set, on the first floor, before the Testing Lab, along with a Nuka-Cola Quartz. The other Nuka-Cola Victory is found near a hot plate in office 2 observation area.
 * 3 battle brews in a Strange Cask in the nightstalker area of the basement and, in the same room, by looking above where a force field can be seen, disable it with the upgraded sonic emitter, and along with a skeleton, a battle brew, stimpak, super stimpak and a Stealth Boy will drop to the ground.
 * The rare Doggie treat can be found in a dog bowl where the nightstalkers spawn.
 * K9000 Mod - Mentat Chow information stored in office 2 observation area terminal.
 * Two La Fantoma! Inside lab #1 under a pre-War book next to the terminal and one on a pre-War book in the research area next to the desk to the right when entering this area.
 * Recipes - Lockpick skill book can be found in one of the vents in the X-13 Stealth Testing Lab - the one over the double doors in the reception area. It is possible to reach this vent while standing on the railing in the Reception Observation Area.
 * Recipes - Sneak skill book From the test entrance turn right and go through the left door (the one sharing a wall with the "Hold up, Rocketeers!" poster), go through the door just on your right (the one sharing a wall with the Repconn poster), go through the hole in the wall on the right, go straight through the next hole in the wall, and the skill book is between the two fridges.
 * Three mine boxes, two ammunition boxes, and a LAER can be found on top of the building. It seems, however, that the roof can only be reached by jumping down from the cliff above, which in turn can only be reached by jumping up a small pile of rocks, just west of the Big MT West Tunnel.

Appearances
The X-13 research facility appears in the Fallout: New Vegas add-on Old World Blues.