Mont. Code Ann. § 45-8-333
Reckless or malicious use of explosives
45-8-333 . Reckless or malicious use of explosives. A person who recklessly or maliciously uses, handles, or has in the person's possession any blasting powder, giant or Hercules powder, giant caps, or other highly explosive substance through which any human being is intimidated, terrified, or endangered is guilty of a misdemeanor.