Where can I find more Fat Man mini-nukes in Fallout 4?

I just found the Fat Man, and the mini-nukes can be hard to come by. I recall feeling they were a lot more scripted in previous Fallout titles, rather then being acquired at stores, or created. Where can I go to find more mini-nukes?

Solution 1:

This is almost certainly a bug, however after completing the Secret of Cabot House quest chain, the Fat Man and mini nuke in the basement of the Cabot House in central Boston will

1) no longer be flagged as owned, so you are free to take both

And more importantly

2) Respawn immediately when you fast travel away and then return to the house.

(In addition to the Fat Man and mini nuke, there's two steamer chests and a Master locked safe full of guns ammo and pre-war money, a Gamma Gun, and tons of highly valuable junk and aid items scattered around the house. It's a gold mine.)

Solution 2:

Firstly, Super Mutant Suiciders carry a mini-nuke. Unfortunately, their main goal is to kill you with it, so you have to kill them before they use it in order to loot it from their body.

A handy guide at Xbox.MMGN.com provides an excellent list of locations hosting a Fat-Man and some mini-nukes. Finding a Fat-Man usually suggests that there should be at least one mini-nuke nearby, but this is speculation from personal experience.

Please note that the article also features a handy map for pin pointing these locations. For the most part, these are locations you will likely come across, anyway. For some, you will need to have completed various quest steps, to access the location.

• Robotics Disposal Ground: Near a pile of tires, at the east entrance.

• Malden Center: Found on the station, near an ammo crate, to the south on the first floor.

• Revere Satellite Array: There is a Super Mutant Suicider at this location.

• Prydwen: There are 5 mini-nukes on level 2.

• Fort Strong: Multiple nukes across the location.

• South Boston Military Checkpoint: Inside the truck trailer, locked behind an Expert terminal.

• Gunners Plaza: Two mini-nukes can be found on level 2, in the southern area of the map.

• Ticonderoga Safehouse: A mini-nuke and a Fat Man are located on the sixth floor.

• D.B. Technical High School: In the basement, and on level 1.

• The Castle: In the western point of the star-like structure.