C.R.S. § 34-61-102: Location of borehole restricted.

No borehole penetrating a gas-bearing or oil-bearing formation shall be located within two hundred feet of a shaft or entrance to a coal mine not definitely abandoned or sealed. No such borehole shall be located within one hundred feet of any mine shaft house, mine boiler house, mine engine house, or mine fan. The location of any proposed borehole must ensure that when drilled it will be at least fifteen feet from any mine haulage or airway.