Munitions

Minuteman intercontinental ballistic missile

Also known as
  • LGM-30
  • LGM-30A
  • LGM-30B
  • LGM-30F
  • LGM-30G
  • LGM-30G Minuteman III
  • Minuteman I
  • Minuteman II
  • Minuteman III
  • LGM-30 Minuteman

The Minuteman intercontinental ballistic missile is the United States' silo-launched, solid-fuel land-based strategic nuclear missile family. Boeing-built Minuteman III missiles remain the current operational generation, with 400 missiles dispersed at F.E. Warren, Malmstrom, and Minot and sustained through life-extension work while the LGM-35A Sentinel replacement program is restructured.

Minuteman intercontinental ballistic missile, Intercontinental ballistic missile, Munitions
Image source: Unarmed Minuteman III ICBM launch - operational test - Vandenberg Space Force Base - May 21 2025.jpg
Profile / Specs

Profile

Origin
United States
Built by
Boeing
Type
Intercontinental ballistic missile
Service note
1962-present
Designed
1950s
Produced
1968-1978

Specifications

Role
Land-based strategic nuclear missile
Guidance
Inertial guidance
Propulsion
Three-stage solid-fuel rocket
Launch mode
Silo-launched from hardened launch facilities
Current force
400 Minuteman III missiles at F.E. Warren, Malmstrom, and Minot
Launch crew
Two missile combat crew officers in an underground launch control center
Range
More than 6,000 miles (9,600 km); Smithsonian object record gives 13,000 km (8,000 miles) for Minuteman III
Dimensions
Smithsonian training missile record: 59 ft 8 9/16 in tall and 6 ft diameter
Weight
About 79,432 lb (36,030 kg)
Payload
Originally able to carry multiple independently targetable reentry vehicles; current U.S. load is one warhead under arms-control limits
Launch And Control Network

Minuteman is more than the missile body. Official Air Force sources describe a dispersed field of hardened silos connected to underground launch control centers, with redundant communications linking crews to national command authorities.

Silo field

AFNWC lists 400 current Minuteman III missiles dispersed across F.E. Warren, Malmstrom, and Minot.

Crew cell

Two-officer missile combat crews remain on alert in underground launch control centers.

Airborne backup

The Air Force fact sheet says specially configured E-6B airborne launch control center aircraft can assume command and control if isolated missiles lose ground command capability.

Source labels: Minuteman III (LGM-30G); LGM-30G Minuteman III Air Force Fact Sheet.

Warhead Load And Treaty Context

The Minuteman III generation introduced MIRV carriage, but public museum records distinguish that design capacity from the current U.S. load. The National Museum says each missile has been limited to one warhead since 2005, and the Smithsonian's Minuteman III object record describes the current single-warhead configuration as an arms-control result.

Original design

Minuteman III was designed around multiple independently targetable reentry vehicles and was the first missile fielded with that capability.

Current public load

Museum sources describe current Minuteman III missiles as carrying one nuclear warhead under U.S.-Russia arms-control limits.

Source labels: Boeing LGM-30G Minuteman III; Smithsonian Minuteman III Missile.

Variants

The Minuteman family uses LGM-30 series designations: the U.S. Air Force explains LGM as silo-launched, surface-attack guided missile, with 30 identifying the Minuteman series and the trailing letter distinguishing the model.

VariantConfigurationDesignation notes
LGM-30A Minuteman IAInitial Minuteman I model

Museum timeline data lists 150 Minuteman IA missiles in the 1962 operational Minuteman I force.

Sources: Minuteman Timeline, Boeing LGM-30A Minuteman IA

LGM-30B Minuteman IBImproved Minuteman I model

The museum identifies Minuteman IB as LGM-30B and lists 650 Minuteman IB missiles in the 1962 operational force.

Sources: Minuteman Timeline, Boeing LGM-30A Minuteman IA

LGM-30F Minuteman IISecond-generation Minuteman

The museum identifies Minuteman II as LGM-30F and lists it as operational in 1966 with 450 missiles deployed in nine squadrons.

Sources: Minuteman Timeline, Boeing LGM-30A Minuteman IA

LGM-30G Minuteman IIICurrent Minuteman generation

The Air Force identifies LGM-30G as the current Minuteman III; museum sources describe it as operational in 1970 and the only current U.S. land-based ICBM after Minuteman II and Peacekeeper retirements.

Sources: LGM-30G Minuteman III Air Force Fact Sheet, Boeing LGM-30G Minuteman III, Minuteman Timeline

Carrier Aircraft

The National Museum of the United States Air Force says the C-5A Galaxy can accommodate two Minuteman intercontinental ballistic missiles.

CarrierCarrier typeCarriage evidence
C-5 Galaxy, Strategic airlifter / transport aircraft family, Aircraft & UAVsC-5 GalaxyStrategic airlifter

The National Museum of the United States Air Force says the C-5A Galaxy can accommodate two Minuteman intercontinental ballistic missiles.

Sources: National Museum C-5A Galaxy

Timeline

Minuteman intercontinental ballistic missile Key Events

  1. Minuteman development approved

    The National Museum timeline records Department of Defense approval for Minuteman missile-family development.

    Sources: Minuteman Timeline

  2. First successful Minuteman test flight

    The National Museum timeline records the first successful Minuteman test flight.

    Sources: Minuteman Timeline

  3. Minuteman I becomes operational

    Minuteman I became operational with a force listed by the museum as 150 Minuteman IA and 650 Minuteman IB missiles.

    Sources: Minuteman Timeline

  4. Minuteman II enters operational service

    The Minuteman II generation became operational, with the museum listing 450 deployed missiles in nine squadrons.

    Sources: Minuteman Timeline

  5. Minuteman III enters service

    Minuteman III became operational as the most modern Minuteman model, initially listed by the museum at 550 deployed missiles.

    Sources: Minuteman Timeline, Boeing LGM-30G Minuteman III

  6. First Minuteman III placed on alert

    AFNWC records the first Minuteman III alert at the 741st Strategic Missile Squadron.

    Sources: Minuteman III 50th Anniversary Year

  7. Minuteman II deactivation begins

    The museum timeline records the start of Minuteman II system deactivation.

    Sources: Minuteman Timeline

  8. Guidance replacement reaches IOC

    Boeing reported that the Minuteman III Guidance Replacement Program achieved initial operational capability on July 20, 2000.

    Sources: Boeing Minuteman III Guidance Replacement Program IOC

  9. Single-warhead Minuteman III posture

    The National Museum states that Minuteman III can carry three warheads but has been treaty-limited to one warhead since 2005.

    Sources: Boeing LGM-30G Minuteman III

  10. Major life-extension work scheduled to finish

    Air Force reporting said the final Minuteman III life-extension programs intended to carry the platform through 2020 were scheduled for completion in 2015.

    Sources: Life Extension Programs modernize ICBMs

  11. GAO warns on Sentinel transition risk

    GAO reported that Sentinel delays require prolonged Minuteman III operation and that Air Force officials were assessing options to operate Minuteman III potentially through 2050.

    Sources: GAO Minuteman III Sentinel transition risks

  12. Life-extension horizon

    AFNWC states that life-extension programs kept Minuteman III viable as fielded until 2030, beyond its original 10-year service life.

    Sources: Minuteman III 50th Anniversary Year

Media

Minuteman intercontinental ballistic missile Videos

Minuteman intercontinental ballistic missile Images

Minuteman intercontinental ballistic missile, Intercontinental ballistic missile, Munitions - view 1
Source: Minuteman3launch.jpg
Minuteman intercontinental ballistic missile, Intercontinental ballistic missile, Munitions - view 2
Source: Minuteman III Launch Control.JPG
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Sources

Minuteman III (LGM-30G)Publisher: Air Force Nuclear Weapons Center | Note: Supports current force count, basing, launch-control crew context, sustainment, modernization, and Sentinel replacement context. | Accessed: 2026-07-02LGM-30G Minuteman III Air Force Fact SheetPublisher: U.S. Air Force | Note: Supports the LGM designation meaning, hardened-silo and launch-control-center architecture, E-6B airborne launch-control fallback, and Minuteman background. | Accessed: 2026-07-02Boeing LGM-30G Minuteman IIIPublisher: National Museum of the United States Air Force | Note: Supports Boeing manufacturer context, Minuteman I/II/III family history, Minuteman III MIRV background, one-warhead treaty context, basing, and key technical characteristics. | Accessed: 2026-07-02Minuteman TimelinePublisher: National Museum of the United States Air Force | Note: Supports the Minuteman family timeline, including 1958 development approval, 1961 first successful test flight, Minuteman I/II/III operational years, deployed model counts, and Minuteman II deactivation. | Accessed: 2026-07-02Boeing LGM-30A Minuteman IAPublisher: National Museum of the United States Air Force | Note: Supports early Minuteman design context, Boeing prime-contractor role, LGM-30A/B/F/G designation sequence, solid-fuel basing concept, and later upgrade categories. | Accessed: 2026-07-02Minuteman III 50th Anniversary YearPublisher: Air Force Nuclear Weapons Center | Note: Supports the IA/IB/II/III family structure, 1970 Minuteman III alert milestone, 10-year original service-life context, 2030 life-extension horizon, current 400-missile force, and Sentinel replacement context. | Accessed: 2026-07-02Smithsonian Minuteman III MissilePublisher: National Air and Space Museum | Note: Supports Minuteman III dimensions, Boeing manufacture, three-stage solid-fuel description, maximum range, and current single-warhead arms-control context. | Accessed: 2026-07-02Life Extension Programs modernize ICBMsPublisher: U.S. Air Force | Note: Supports Minuteman III life-extension work on flight controls, propellant, guidance, propulsion rocket engine, ground systems, and scheduled 2015 completion for programs intended to carry the platform through 2020. | Accessed: 2026-07-02GAO Minuteman III Sentinel transition risksPublisher: U.S. Government Accountability Office | Note: Supports current sustainment and Sentinel-transition context, including prolonged Minuteman III operation, infrastructure scale, and risk-management findings. | Accessed: 2026-07-02Boeing Minuteman III Guidance Replacement Program IOCPublisher: Boeing | Note: Supports Boeing's Minuteman involvement since the 1958 concept stage and the July 20, 2000 initial operational capability milestone for the Minuteman III Guidance Replacement Program. | Accessed: 2026-07-02America's Nuclear TriadPublisher: U.S. Department of Defense | Note: Supports the Minuteman III role in the U.S. nuclear triad and the reported contractor and performance data shown on the page. | Accessed: 2026-07-02National Museum C-5A GalaxyPublisher: National Museum of the United States Air Force | Note: Supports the C-5A Galaxy fact sheet statement that the aircraft can accommodate two Minuteman intercontinental ballistic missiles. | Accessed: 2026-07-02Unarmed Minuteman III ICBM launch - operational test - Vandenberg Space Force Base - May 21 2025.jpgPublisher: Wikimedia Commons | Note: Image provenance and licensing page for the primary Minuteman gallery image. | Accessed: 2026-07-02Minuteman3launch.jpgPublisher: Wikimedia Commons | Note: Image provenance and licensing page for the launch image used in the gallery. | Accessed: 2026-07-02Minuteman III Launch Control.JPGPublisher: Wikimedia Commons | Note: Image provenance and licensing page for the launch-control image used in the gallery. | Accessed: 2026-07-02