This is from 7.40.1 Heat and Oxygen – History Simulated
- When you are at the Mission Altitude, the crew men may become affected by the cold and lack of oxygen. On MT-1a, if the result is 8 or 9 one, or more of your crew men have been affected. Roll D6 once for each crew member: 1-5: No effect. 6: Affected – See effects for Light Wound and if Heat is also out, see effect for Intercom Out. He is affected until you reach the Altitude on Column C again. (Optional: If you roll 6, roll again. If another 6 is rolled, crewman is unconscious (see DT-7a and 7.36 Damage Tables, Damage Table 7a.)
AM-1Lack of Oxygen: Roll on “Frostbite” above. If “severe” the Crewman has chronic effects and will be sent home.