Utah Code Ann. § 53-7-225
(2) A person may sell class C common state approved explosives in the state as follows:
(3) Except as provided in Subsection (5), a county or municipality may not prohibit any person from discharging class C common state approved explosives in the state as follows:
(a) between the hours of 11 a.m. and 11 p.m., except that on July 4 and July 24, the hours are 11 a.m. to midnight:
(b)
(5) A county or municipality may prohibit any person from discharging class C common state approved explosives: