1.   Astronauts discovered that finding their way about on the lunar surface was often harder then they expected.

2.   Despite being obviously different in weight they struck the lunar surface together.

3.   For example, the gravity field on the lunar surface is about one seventh as strong as on Earth.

4.   Long stays on the lunar surface demand prolonged exposure to an environment differing substantially from that at the surface of Earth.

5.   Standing in bright sunlight on the lunar surface would be extremely hot.

6.   Such a transportation system will exert a constant demand for fuel both at the space station and on the lunar surface.

7.   Such migration need not disturb the uniformity of the dust type across the lunar surface.

8.   Sufficiently large impacts can hurl crater ejecta to any point on the lunar surface.

9.   The glass in the regolith owes its origin to impacts of cometary and asteroidal material with the lunar surface.

10.   The most obvious source of the necessary electrical energy would be solar panels set out on the lunar surface.