meh.. automated mining to solar panel construction & using the metal+energy to make a mass driver in a fully closed loop system. Now you'll have a exponentially

meh.. automated mining to solar panel construction & using the metal+energy to make a mass driver in a fully closed loop system. Now you'll have a exponentially increasing mining and space habitat and/or dyson swarm construction platform. I'll bet we can shred the moon clean off in under a few 100k years.