Sec. 10. DURATION OF RIGHTS; ASSIGNMENT; PIPE LINES, TELEPHONE LINES AND ROADS. Title to all rights purchased may be held by the owners so long as the area produces oil and gas in paying quantities. All rights purchased may be assigned in quantities of not less than forty (40) acres, unless there be less than forty (40) acres remaining in any survey, in which case such lesser area may be so assigned. All assignments shall be filed in the General Land Office within one hundred (100) days after the date of the first acknowledgment thereof, accompanied by ten cents (10¢) per acre for each acre assigned, and if not so filed and payment made, the assignment shall be ineffective. All rights to any whole survey and to any assigned portion thereof may be relinquished to the State at any time by having an instrument of relinquishment recorded in the county or counties in which the area may be situated, and filed in the Land Office accompanied with One Dollar ($1) for each area assigned but such assignment shall not relieve the owner of any past due obligations theretofore accrued thereon. The Board shall authorize the laying of pipe line, telephone line, and the opening of such roads over State Park Lands as may be deemed reasonably necessary for and incident to the purposes of this Act.