EXHIBIT 58. PROGRAM COST ESTIMATES Cost Element Earth Surface: Habitat Simulation Low Earth Orbit: Space Base Propellant Depot Geosynchronous Orbit: Space Station Solar Power Station Lunar Orbit: Automated Resource Satellites Space Station Propellant Depot Lunar Surface: Mining Base Lunar Libration Point L5: Model 0 & 1 Space Transportation: First Generation STS Impact Large Lift Vehicle Reusable Nuclear Shuttle 1 Reusable Nuclear Shuttle 2 Lunar Logistic Tug 1 Lunar Logistic Tug 2 Crew Modules "Super" Shuttle Unallocated: Mgt. & Adm. Other (Facilities, Equipment, Etc.)
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