Tinker Joe can be found in the parking lot outside the facility along with his robots, including potential companion Sergeant RL-3. The parking lot is also a random encounter location. Inhabitants include mole rats, radroaches and Protectrons. There are a number of unused Protectrons that remain in their charging stations and a few Nuka-Cola vending machines on the various levels.
The first room has five Protectrons on display in various positions. Two will be more specialized and in the spotlights: a Nuka-Cola Protectron and a military-issued Protectron. The other three are standard Protectrons. Two rooms on the left are restrooms. To the northwest, there's a small room with two storage closets with minor loot and ammunition. To the right of the entrance are two paths. The left path goes to a room with a few lockers and shelves that then leads to a larger room which seems to be a small part of the assembly line for the robots. To the right from coming through the entrance is a much smaller room with a workbench. After this room is some stairs that lead to overlooking the previous large room. The right path is simply a winding flight of stairs that also leads to overlooking the large room.
After installing the mainframe processor, the option to reconfigure the mainframe to stop all the Protectrons in the facility from attacking presents itself, as long as the Lone Wanderer has at least 50 Science skill. The RobCo Production Mainframe can be hacked here and will have a few options:
- Basic Operation: * Error*
- Pest Extermination: Kill radroaches and mole rats
- Total Liquidation: On/off attack humans
- Stress Testing: Causes robots and turrets to attack each other. This is applied on top of any other command. Turrets will still be hostile regardless of other settings.
When entering this room, there will be two pool tables, with the right one having a couch on top of it. There are two Nuka-Cola fridges, and one regular refrigerator to the right. If heading to the left of this room, there will be a long hallway. Going through the hallway there should be a mannequin, along with three ammunition boxes. A little further down, there's a gate with a leaf blower and two lawnmower blades.
Right before the hallway ends there is a room to the left. In there is a first aid box and not much else. Going straight from the first room is a small cafeteria with four tables on the right. Continuing from this room one can go straight or turn left. To the left and another left, there is a small room where the first hallway ended, and past that there is another room with minor caps and loot. Turning left and then going straight leads upstairs.
If heading right from the original room, there will be a short hallway with restrooms on either side. Past that there is the office with four office spaces with minor loot. From there, there's a hallway with three rooms on the sides. The first looks like an office/storage area. The second room is a larger office with four desks and file cabinets. The last room is again an office/storage area with several boxes and a first aid box. Now continuing upstairs it makes like a trident pattern.
The left path there's a storage closet and past that is a small monitor room with two lockers. The right path is the same but a bit more destroyed. The storage closet is caved in and the monitor room is destroyed. Lastly, continuing straight from the stairs is the main computer room for the whole building. There's a first aid box, a pre-War book, and a Stealth Boy in there.
- Lying, Congressional Style, on the reception desk at the back of the foyer where one enters.
- Big Book of Science, by the Protectron pod area to the northeast, on the console.
- Two pre-War books - One on the shelf behind the reception desk, and one next to the Big Book of Science in the control room.
- A bottlecap mine on a workbench in a small room to the east (see local map).
- A Stealth Boy, in the office ahead of first entering the factory. It is located on a desk in the cubicle to the left when entering the room past the reception desk.
- A camera in the southern bathroom next to the reception, must close the door.
Offices and cafeteria
- Nikola Tesla and You - After entering offices and cafeteria, go right, head straight (past the washrooms), and look on the table (next to the desk) in the third cubicle on the right.
- D.C. Journal of Internal Medicine - Offices and cafeteria first floor, southernmost room, left before the stairs going up. On a desk in the most northwest cubicle, next to a dose of Jet and a first aid box. This room also contains one of the Stealth Boys, on the desk closest to the Protectron charging station.
- One pre-War book in the mainframe area (second floor), on a desk.
- Three Stealth Boys
- 52 dinner plates and 47 drinking glasses, the highest amount of both in a single section in the game.
- Inside the restrooms next to the main reception, is a broken Protectron seated on a toilet, with scrap metal inside the toilet below. Similar to this, there is also a skeleton with a camera and pre-War money looking underneath a bathroom stall.
- The factory floor and cafeteria/offices have a total of 31 radroaches, the highest number in the game.
RobCo facility appears only in Fallout 3.
Immediately after entering the door to the cafeteria area from the factory floor, one will notice, in the pod to the left, that the Protectron's arms slowly move down to its sides, even though it is supposed to be deactivated. [verified]