Re:Gravitricity
by nl on Saturday November 22, 2014 @10:49PM
(#8647737)
This is wrong.
1. Digging mine shafts is dramatically cheaper than structal tunnels. They dig exploratory shafts frequently to roughly these depths for well under $1m
2. Using a disused mineshaft would have a negative cost associated with it because the security associated with keeping it safe is non zero.
1. Digging mine shafts is dramatically cheaper than structal tunnels. They dig exploratory shafts frequently to roughly these depths for well under $1m
2. Using a disused mineshaft would have a negative cost associated with it because the security associated with keeping it safe is non zero.