Rule 36.21.644 - CASING SHOE(1) In all drilled wells, permanent well casing that is driven should be equipped with a standard drive shoe at its lower end, welded or threaded onto the lower end of the string of casing. The shoe shall have a beveled cutting edge of metal forged, cast, or fabricated for this special purpose.Mont. Admin. r. 36.21.644
NEW, 1986 MAR p. 1699, Eff. 10/17/86.37-43-202(3), MCA; IMP, 37-43-202(3), MCA;