Rather than just poo pooing the number lets hear your best shot.
10,000 ft tunnel
2 miles track
ore carts
ventilation shafts
terminals
battery powered engines
Replacement cost please, lets see what a great researcher you are Derb. $250 * 10,000 is $2.5 million just to give you a bit of help.
FYI - You aint got no membermark from me, capiche?
Disclaimer - I am not a basher, disgruntled ex-employee, hedge fund employee etc etc. I am a regular guy who is fed up with people being scammed.