Possession, manufacture, transportation and sale of explosives, improvised explosive device, or incendiary apparatus with unlawful intent prohibited; penalties; definition; exception.
Wyo. Stat. Ann. § 6-3-111
in effect(a) As used in this section:
(i) "Explosive" means any chemical or mechanical compound, substance or mixture that is commonly used or intended to cause an explosion and which contains any oxidizing and combustive units or other ingredients in such proportions, quantities or packing that an ignition by fire, friction, concussion, percussion or by detonation of any part of the compound or mixture is likely to cause such a sudden generation of heated gases that the resultant gaseous pressures are capable of producing destructive effects on nearby objects, or of destroying life or limb;
(ii) "Improvised explosive device" means any device, not commercially manufactured in the ordinary course of interstate commerce, which contains explosives as defined by paragraph (i) of this subsection;
(iii) "Incendiary apparatus" means any fuse, accelerant, time delay ignition apparatus, mechanism, device or material or combination of materials designed, devised or reasonably calculated to cause, spread or accelerate the rate of burning of a fire, or to cause additional damage at or by a fire, or to cause an explosion in connection with a fire;
(iv) The terms "explosive," "improvised explosive device" and "incendiary apparatus" shall be construed to include and refer to any explosive, incendiary, bomb, grenade, rocket having a propellant charge of more than four (4) ounces, missile having an explosive or incendiary charge of more than one-quarter (1/4) ounce, mine or similar device containing or represented to contain any poison gas, nerve gas, biological agent or other chemical or substance capable of causing death or serious physical injury.
(b) Any person who possesses, manufactures, transports, sells or delivers to another person any explosive, improvised explosive device, or incendiary apparatus, with the intent unlawfully to endanger the life or physical well being of another, to commit assault or battery or to inflict bodily harm or injury upon the person of another, or with the intent to assist another person to do the same, is guilty of a felony. Upon conviction, he shall be punished by imprisonment for not more than ten (10) years, a fine of not more than ten thousand dollars ($10,000.00), or both.
(c) Any person who possesses, manufactures, transports, sells or delivers to another person any explosive, improvised explosive device, or incendiary apparatus, with the intent to cause injury or damage to the property of another as defined in W.S. 6-3-103(c), or with the intent to assist another person to do the same, is guilty of a felony. Upon conviction, he shall be punished by imprisonment for not more than five (5) years, a fine of not more than five thousand dollars ($5,000.00), or both.
(d) A person is guilty of intimidation by explosive device if he knowingly, and with the intent to threaten, intimidate or terrorize another person, uses any object or material and represents it to be an explosive, improvised explosive device or incendiary apparatus, and thereby places another person in reasonable fear of imminent physical harm. Upon conviction he shall be punished by imprisonment for not more than five (5) years, a fine of not more than ten thousand dollars ($10,000.00), or both.
(e) Nothing contained in this section shall be construed to apply to any law enforcement officer if performed in the lawful performance of his official duties, nor to any person customarily engaged in the lawful business of manufacture, transportation, sale or use of such materials and devices, if performed in the ordinary course of business and without the criminal intent described in this section, nor to any person actually and lawfully engaged in demolition activity on a ranch, farm or construction site with the authority of the owner thereof, and acting without the criminal intent described in this section.
Source: WY Statutes (Official Site)URL: https://wyoleg.gov/statutes/compress/title06.pdfFetched: 10/4/2026