Reference Wyoming Statutes 37-12-301 thru 304. These laws set the requirements to be followed by any "person" contemplating "excavation" and what is required to protect "underground facilities." The law defines the key phrases thusly:
(a) "Excavation" means any operation in which earth, rock or other material on or below the ground is moved or otherwise displaced by means of power tools, power equipment or explosives, and includes grading, trenching, digging, ditching, drilling, augering, tunneling, scraping and cable or pipe blowing and driving, except tilling of soil and gardening or agricultural purposes.
(b) "Person" means an individual, partnership, municipality, state, county, political subdivision, utility, joint venture or corporation, and includes the employer of an individual.
(c) "Underground facility" means any item of personal property buried or placed below ground for use in connection with the storage or conveyance of water, sewage, electronic, telephonic or telegraphic communications, electric energy, oil, gas or other substances and including, but not limited to, pipes, sewers, conduits, cables, valves, lines, wires, manholes, attachments and those parts of poles below ground.
045-6 Wyo. Code R. § 6-26