Okla. Const. art. IX, § 33

Any person, firm, or corporation owning or operating any coal, lead, iron, or zinc mine, or any saw mill, grain elevator, or other industry, whenever the Commission shall reasonably determine that the amount of business is sufficient to justify the same, near or within a reasonable distance of any track, may, at the expense of such person, firm, or corporation, build and keep in repair a switch leading from such railroad to such mine, saw mill, elevator or other industry; such railroad company shall be required to furnish the switch stand and frog and other necessary material for making connection, with such side track or spur under such reasonable terms, conditions and regulations as the said Commission may prescribe, and shall make connection therewith. The party owning such mine, saw mill, elevator or other industry shall pay the actual cost thereof. If any railroad company, after proper demand therefor is made, shall refuse to furnish said material for making said connection and put the same in place, or after the building of such switch, shall fail or refuse to operate the same, such railroad company failing and refusing for a reasonable time, shall forfeit and pay to the party or corporation aggrieved, the sum of five hundred dollars for each and every offense, to be recovered by civil action in any court of competent jurisdiction; and every day of such refusal on the part of the railroad company to operate such switch as aforesaid, after such demand is made, shall be deemed a separate offense.