The Costs and Consequences of U.S. Nuclear Weapons Since 1940. The Nuclear Weapons Cost Study Project
(More info here)

Total cost of the Manhattan project: (through August 1945) $20 billion dollars

Total number of U.S. nuclear warheads and bombs built between 1945 and 1990:
More than 70,000 of 65 types

Number remaining in U.S. stockpile as of 1997:
12,500 (8,750 active, 2,500 contingency stockpile, 1,250 awaiting disassembly)

Number of nuclear warheads requested by the U.S. Army in 1956 and 1957:
151,000

Amount of plutonium remaining in U.S. nuclear weapons:
43 Metric tons

Number of dismantled plutonium "pits" stored at the Pantex Plant in Amarillo, Texas:
12,067 (as of May 6, 1999)

States with the largest number of nuclear weapons:
New Mexico (2,450), Georgia (2,000), Washington (1,685), Nevada (1,350), and North Dakota (1,140) (I wonder why Georgia? -ed)

First and last U.S. nuclear weapons tests:
July 16, 1945 ("Trinity") and September 23, 1992 ("Divider")

Number of U.S. nuclear tests in Nevada:
911

Number of U.S. nuclear bombs lost in accidents and never recovered:
11
- posted by Milan @ 1:04 PM