Mass Fusion containment shed

The Mass Fusion containment shed is a location in the Commonwealth in Fallout 4.

Background
A lot of the backstory is implied at this site, there is a supervisor's terminal on the upper floor of the shed which has logs hinting at illegal activity and murder. The terminal allows you to unlock the security door on the lower level and if you go into the caged area with the stacked barrels, there is a hole in the shed with an open water pipe, implying they were dumping waste into it.

Assuming they didn't murder the person hinted at in the supervisor's terminal logs, they just dumped him in the open water pipe and he mutated into a ghoul, as when you approach, a ghoul crawls out of it.

Layout
A warehouse storing many barrels of radioactive material. There are medium levels of radiation throughout the entire inside of the building. It contains glowing radroaches and feral ghouls, including a legendary one (which can be looted). The computer to open the security gate is on the top floor, right above it. It is possible to jump onto one corner of the lower roof where one will find a synth and a human corpse. Near the assembly line, behind radioactive barrels, there's a hatch that leads into a subterranean chamber. In this subterranean there's a generator that can be activated. Doing this will result in the deactivation of a radio channel called "Automated Radio Alarm" that can be picked up after initialisation of Radio Tower 3SM-U81.

Notable loot

 * A fusion core on the generator behind the security gate.
 * A box of leveled weapons and ammo behind the barrels near the generator.

Radio Signal
When investigating the radio signal, there is a hatch to the 'Underground Reactor' behind where you loot the fusion core. It can be difficult to see but if you look to the right of the conveyor belt there is a radioactive barrel standing on its own a trolley with 2 other barrels in it. Push the standalone barrel out of the way and you can access the hatch to the reactor below.

Appearances
The Mass Fusion containment shed only appears in Fallout 4.