The following words and terms, when used in this chapter, have the following meanings, unless the context clearly indicates otherwise:
Developed facility-The portion of a mined-out underground noncoal mine developed or being developed for storage, manufacturing or other activities requiring a person to enter the mined-out area. The term includes all roads and means of entering and leaving the mined-out area of the underground noncoal mine.
Mined-out-A portion of the noncoal underground mine where no further mining is planned.
Noncoal underground mine-
Person-A natural person, partnership, association or corporation or any agency, instrumentality or entity of Federal or State government. When used in any clause prescribing and imposing a penalty, or imposing a fine or imprisonment, or both, the term "person" does not exclude the members of an association and the directors, officers or agents of a corporation.
25 Pa. Code § 207.102