The W67 was an American
Developed by Los Alamos, the warhead was in the megaton range and was to have a yield comparable to that of the W56. It was housed in the Mark 17 reentry vehicle and one of the warhead's design goals was the highest maximum output temperature possible. Only one partial yield test of the warhead was performed before the warhead was cancelled in January 1968. Hansen identifies this test as Crosstie Zara.
The Mark 17 RV had a difficult development. The planned total RV and warhead weight was 900 pounds (410 kg), but by November 1966 it weighed 938 pounds (425 kg) due to the higher than anticipated levels of hostile weapons effects protection needed. The actual warhead weight was 675 pounds (306 kg).
- MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles (PDF) (Report). Lawrence Livermore National Laboratory. 1976. p. 22. Archived (PDF) from the original on 2022-07-02. Retrieved 2022-08-12.
- MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles, p. 62.
- Swords of Armageddon Volume VI, p. 459-450.
- Bernard C Nalty (1969). USAF Ballistic Missile Programs 1967-1969 (PDF) (Report). p. 43. Archived (PDF) from the original on 2021-09-26. Retrieved 2022-08-12.
- Swords of Armageddon Volume VI, p. 343-345,460-465.
F A Ross (May 1967). Preliminary Test Proposal on QEST for XW67 (Report). Sandia National Lab. ALSNLDE98057263.