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Fallout Wiki

The Mass Fusion disposal site is a location in the Commonwealth in 2287.[1]


A disposal site on the southeast bank of Lake Cochituate, property of Mass Fusion before the Great War. The site is now home to a group of super mutants.


The two small ponds that comprise the site are highly irradiated, but the lake behind the camp contains normal radiation levels. The barrels that are not in the water, including the ones on the trailer truck between the two ponds, do not emit radiation, however. Various ammo and other containers are found in the two connected crude wooden structures and under the nearby blue tarp.

Notable loot

Related quests


The Mass Fusion disposal site appears only in Fallout 4.



  1. Fallout 4 Vault Dweller's Survival Guide Collector's Edition p. 355: "[5.06] MASS FUSION DISPOSAL SITE
    This was the property of Mass Fusion and used as a disposal site for coolants and other liquids. As much of the poisons were buried at this site, pressure has built up and the irradiated pools around the shores of the lake have bubbling gasses. Be wise: Wear radioactive protective gear at all times. Be perceptive: Locate the steamer trunk in the treehouse to the northeast. Be extra perceptive: There’s a Mini Nuke inside the large tire by the yellow digging machine."
    (Fallout 4 Vault Dweller's Survival Guide)