6.2 and describes an amended configuration. It is this second colony design which this study proposes--there were no further major configuration changes. Sections VI.10, VI.11, and VI.12 deal with temperature and humidity control, food production and waste recycling,and living space design. These topics did not affect the overall configurations but the designs presented apply to the second (final) overall design. VI.3: THE FIRST HULL VI.3.1: General Remarks: The major design inputs and decisions covered in this section are flowcharted in Figure 6.1: at the top, starting assumptions and early decisions; at the bottom, the first hull configuration. VI.3.2: Assumptions: As described in Chapter IV, the ES group was given two assumptions at the outset of the study. First, the colony is in orbit about the trailing Lagrange point LS in the Earth-Moon System (see Figure 4.1). Because such an orbit is stable (6.1), the colony does not require an orbital correction system. Because the colony is at LS, it must deal with a radiation environment unhealthy to human beings; this environment is described in Appendix VI.A. LS orbits are almost continually illuminated by the Sun (see Section IV.l). The meteorite environment at LS is described in Appendix VII.C. This assumption is not flowcharted in Figure 6.1 because it does not bear directly on the first hull design. It does, however, affect the shield design (by forcing its existence) and will thus reappear in a later section. Second, it is assumed that raw materials for the construction of the colony are available as lunar soil, unprocessed, delivered to LS. A description of this lunar soil is in Section VIII.2.1. Materials not available on the Moon are brought from Earth. So are colony components which cannot be manufactured onsite, the initial components of the construction site, and logistical support for the construction site. However, since it is anticipated that most of the colony mass is to be produced from lunar materials, and
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