Jackass flats: map of blast damage zone

Here's the blast zone for the 4,000 ton interplanatary Orion lanched with .15 kt intial blasts:



Don't put any frame houses closer than 2000 feet from your launch site.

This site can handle blasts up to 50 megatons, so you could launch a 1,333,333,333 ton Orion with the blast zone all on government land.