Bomb shelters you can buy now, from Popular Mechanics.
http://www.popularmechanics.com/scie...s/4325649.html

Here's a company based in Texas:

Home:
http://www.bomb-shelter.net/index.html

They've got several offerings. The smallest can withstand a 10KT nuclear air
blast and protect ten people for a really long time. Here's the basic model:

Drawing:
http://www.bomb-shelter.net/index.ph...96&It emid=70

Full specs:
http://www.bomb-shelter.net/e10_brochure_2009.pdf

Some features:
Air blower life
.................................................. ........... 60,000 hours
(continuous 2,500 days)
Air blower type .................................................. ........
8-in dia. Reverse curve centrifugal 12-V, 7.5 watt
Air blower volume .................................................. ...
40cfm @ 1 in S.P.
Air filter
.................................................. ..................... HEPA
99.99% @ .3 u
Antenna Fittings .................................................. .......
1.5 in and 1 inch NPTF accessible internally
Assembly time .................................................. ..........
1 man-hour
Backfill material required .......................................... gravel
or ¾- in. crushed stone (160 yards)
Batteries......................................... ............................
18-130 amp hour deep cycle marine
Capacity-adults .................................................. .........
10
Connector port to other shelters ................................. 36-inch
diameter with cap
Duration-blower + light 24hr/day - 6 adults .............. 30 days
Emergency escape .................................................. ...
hydraulic cylinder 14,000 lb force@2000 psi
Entranceway diameter ................................................
48inch
Excavated hole size .................................................. .. 14
ft. x 30 ft. x 19 ft. deep (296+ yds)
Fire resistance........................................ .....................
ASTM E-119 1 hr @ 1700 F. mechanical
Floor
.................................................. .........................
Fiberglass fixed
Floor material .................................................. ...........
molded structural fiberglass
Floor space
.................................................. ................ 152 ft
Hatch cover .................................................. ..............
48 x 64 in.
Hatch dome -angle of incidence ................................ 30 degrees
Hatch dome material ..................................................
Combat Composite
Hatch exterior lock
.................................................. ....remote transmitter
Hatch interior latch .................................................. ...
remote transmitter
Hatch manhole .................................................. ........ 28
x 40 inch
Hatch pressure resistance ........................................... 40
psi positive, 5 psi negative
Head room .................................................. ................
7'-4" to 9'-4"
Hull material.......................................... .....................
structural fiberglass
HEPA Filter .................................................. ..............
60 cfm, 99.99% @ 0.3u
Hydrostatic pressure (buoyancy) ................................ 107,550
lbs
Implosion type .................................................. ..........
non-catastrophic
Installation time .................................................. ........
2 days
Interior
color............................................. .................. white,
flame spread of 25-50 Type II, ASTM E84
Lighting
.................................................. ..................... 6
element white LED (2) 12 volt
Max .wind .................................................. ................
150 -350 mph class 0-IV
Overpressure - allowable ........................................... 40 psi
with no earth-arching effect
Protection Factor Gamma .......................................... 131,072 @
93.5 inches of earth
Protection Factor Neutron ..........................................
1,048,576 @ 94 inches of earth