Okla. Stat. tit. 45, § 45-505: Conduct of developments

In the preparation of maps of the territory being, or to be,

developed in mining operations, it shall be the duty of the

operator, where practicable, to furnish the district inspector

prospective plans suitable to the coal seam and adjacent strata, for

the safe economic extraction of coal or other mineral. It shall be

the duty of the operator to see that the developments are

systematically conducted to preserve the health, safety and welfare

of the employees and to prevent the unnecessary leaving of coal or

other mineral in the ground.