[bchallenor]

You can just refuel in Earth orbit though. That would use less fuel [1] than landing on the moon unless you were going to the moon anyway.

[1] https://en.m.wikipedia.org/wiki/Delta-v_budget

[icelancer]

True but storage is an issue and as I said in another comment, Project Orion-type endeavors become more palatable when launched from a stable orbiting rock rather than empty space or a manmade platform.