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Space resources and space settlements
The study director was O'Neill, so the attitude is the
opposite of austere.  Section 1-1 Systems engineering overview for
Regenerative Life-Support Systems Applicable to Space Habitats
by Jack Spurlock and Michael Modell

This has some interesting numbers, perhaps too conservative for
our taste about providing the astronauts with earth-like
environments.

Daily requirements:

food (dry)		0.6 kg
oxygen			0.9
drinking water		1.8
sanitary water		2.3
domestic water ?	5.6

Their requirements for what must be known in advance also seem
excessive.  At these standards, Columbus would be just leaving.