The State Department maintains a Technical Alert List, also known as the sensitive major list, to guide their evaluation of visa submission.
Sorted by rate.
CRITICAL FIELDS LIST
A. CONVENTIONAL MUNITIONS: Technologies associated with:
-- Warheads and other large caliber projectiles
-- Reactive armor and warhead defeat systems.
-- Fusing and arming systems.
-- Electronic countermeasures and systems
-- New or novel explosives and formulations
-- Automated explosive detection methods and equipment
B. NUCLEAR TECHNOLOGY: Technologies associated with production and use of nuclear material for both peaceful
and military applications. Included are technologies for:
-- Enrichment of fissile material
-- Reprocessing irradiated nuclear fuel to recover produced plutonium
-- Production of heavy water for moderator material
-- Plutonium and tritium handling
Also, certain associated technologies related to nuclear physics and/or nuclear engineering. Includes materials, equipment or technology associated with:
-- Power reactors, breeder and production reactors
-- Fissile or special nuclear materials
-- Uranium enrichment, including gaseous diffusion, centrifuge, aerodynamic, chemical, Electromagnetic Isotopic Separation (EMIS), Laser Isotope Separation (LIS)
-- Spent fuel reprocessing, plutonium, mixed oxide nuclear research Inertial Confinement Fusion (ICF)
-- Magnetic confinement fusion
-- Laser fusion, high power lasers, plasma,
-- Nuclear fuel fabrication including Mixed Oxide (uranium-plutonium) fuels (MOX)
-- Heavy water production
-- Tritium production and use
-- Hardening technology
C. ROCKET SYSTEMS (including ballistic missile systems, space launch vehicles and sounding rockets) and Unmanned