The Mass Fusion Building is a building ruin Location in ... leads to computer terminal for Main Quests. You can find an ID Card and Password to access the reactor level on the top floor.

She needs a device called a Beryllium Agitator, which can be found within the Mass Fusion building located ... Use the Executive Key Card that you found on the desk and swipe it in the elevator ...

Allie asks you to retrieve an item called a Beryllium Agitator from the Mass Fusion building. At this point ... as well as the Mass Fusion Executive ID card from the desk. Enter the doorway ...

Your goal is to find and acquire the Beryllium Agitator from the Mass Fusion building. Enter the Vertibird ... Locate the Mass Fusion Labs Key on a desk in a nearby room, then use the terminal ...

The Mass Fusion Building in Fallout 4 is a location that you can find in the Financial District in the center of the Commonwealth. You will have to visit it as part of the Mass Fusion main quest ...