Okla. Stat. tit. 45, § 45-501: Maps of mines

The owner, agent, lessee or operator of every coal or other

mine, shall make, or cause to be made by a competent mining engineer

or surveyor, an accurate map or plan, of such mine, no smaller than

on a scale of two hundred (200) feet to an inch, which map shall

show as follows:

(a) All measurements of said mines in feet or decimal parts

thereof.

(b) All openings, excavations, shafts, tunnels, slopes, planes,

main entries, rooms, and other parts, in proper numerical order in

each opening or stratum of coal in said mine.

(c) The directions of the air currents, when practicable, by

darts, or arrows, marked thereon.

(d) An accurate delineation of the boundary lines between said

mine and all adjoining mines or coal lands where owned or operated

by the same operator or other operators, and the relation and

proximity of the workings of said mine to any other adjoining mine

or coal land.

(e) The bearings and lengths of each tunnel, or entry, or the

boundary of property lines.

The said map or plans, or a true copy thereof, shall be kept in

the general mine office by the said operator or superintendent for

the use only of the mine officials and mine inspectors, and for the

inspection of all persons working in said mines whenever said person

or persons shall have cause to fear that any working place is

becoming dangerous by reason of its proximity to other workings that

may contain water or dangerous gas.