Intriguing....My first reaction is that for a group that size for that length of time, someone (or two) should get training beyond First Aid. Where will they will be living? The kit should probably reflect special demands imposed by the environment. I think I would want to consult with a physician with specific knowledge of the individuals involved, e.g., how many might require appendectomies or something similar during the ensuing two years of isolation? Any chance for phone/radio consultations?