The claim: (200 B61-7 gravity bombs; 50 B61-11 gravity bombs; 300 B83 gravity bombs) Knob Noster, 4,627 (missile field covered an additional 10,000 sq. miles)
What it really is: Whiteman Air Force Base is home 509th Bomb Wing, a bomber wing that operates the the B-2, so it's entirely possible the base has some gravity bombs located on site.
As for the 10,000 sq. mile missile field, this one is false. Such a field would be HUGE, and the base itself is surrounded by a state park to the west, the town of Knob Noster to the north, and farm land to the south and east, not to mention public roads.
Also, looking at this base via Google maps, I can see nothing there that resembles a prison camp.