Estimations for the first mine?

[mipmiopin]

We got 7 gold mines and 3 silver mines.

We have 27 explorers each that can hunt bears, find that new wax stuff so all mines are build and it was fairly easy to find all them mines.

now try making a sword made of gold, and a plate armor, made of silver.
inb4 asian RPG

[aso11]

We got 7 gold mines and 3 silver mines.

We have 27 explorers each that can hunt bears, find that new wax stuff so all mines are build and it was fairly easy to find all them mines.

now try making a sword made of gold, and a plate armor, made of silver.
inb4 asian RPG

Those both would bend too easily.
A-ha. I've got you now evil-doer! *smash sword on enemy helmet, sword bends* .... *gets killed*