Mining (CTP1)

Mining is an advance in Civilization: Call to Power.
==Summary==
The first Construction Advance, Mining opens the door to architecture, metallurgy, and eventually oil and gas. Immediately, Mining gives mines, one way to improve production.
== Great Library entry ==
In making early tools, humanity required flints that were chipped from the surface of the earth. Through time, this evolved into simple tunneling - the first mines. Mining was critical for providing the copper, tin, iron, lead, and gold sought by these early societies.