Regarding Recent column on suitcase sized tactical nukes entitled Could a nuclear weapon be built and carried in a suitcase? Here’s a little more specific info on the topic.
Back in the mid 1970’s, I was a grad student working for Ted Taylor, the dude who designed the explosive trigger for the first U.S. thermonuclear bomb and several small tactical nuclear weapons back in the 1950’s. Ted became a tireless advocate of nonproliferation when the government declassified the basic information needed to build a nuke in the 1970’s. Ted’s opinion was partially based on having couple of us go thru the newly declasssified documents in his filing cabinet and dug up three parameters you needed to know for a DIY nuclear weapon. Ted also had some of his grad students at Princeton repeat the exercise.
One of these “personal nukes” Ted worked on was the Davy Crockett. It used a beefed up recoilless rilfe to shoot a W-54 nuclear warhead. This little atomic powered firecracker weighed about 50 lbs with a selectable yield of 10 - 250 tons (This is just about to the minimum practical size and yield for a fission warhead).
The whole M388 artillery projectile was only 30 inches long, 11 inches in diameter, and weighed 75 pounds. This handy dandy personal protection device was around from 1961 to 1971. An earlier version included a 155 mm artillery piece and a huge 288 mm shell fired from what was, commonly called an “atomic cannon.”
The heavier 155 mm version was transported by either an APC or a duce and a half truck. The 120 mm version could be hauled around and fired from an Army jeep, but it could be dismounted, lugged a short distance and fired by the 3-man crew. Withj only a 2.5 mile range it was a “fire and forget” type weapon - more precisely the soldiers who fired it would be dead and forgotten thanks to an lethal radiation dosage 600 rem within a quarter mile
of ground zero. This was the embodiment of MAD on a personal level.
So the answer to the question is yes assuming you had the weapons grade materials.