A truck (chassis, motor, etc.) used to haul specialized equipment is taxed at the special three percent (31/2%) rate of sales or use tax and the specialized equipment mounted thereon is taxed at the four and one-half percent (41/2 %) retail rate of tax when the equipment is used in connection with geophysical surveying, exploring, developing, drilling, producing, distributing, or testing of oil, gas, and other mineral resources.
35 Miss. Code. R. 4-10-03-303