(A) It is unlawful for a person, lawfully confined in prison or upon the public works of a county or while in the custody of a superintendent, guard, or officer, to escape, to attempt to escape, or to have in his possession tools or weapons which may be used to facilitate an escape.
(B) A person who violates this section is guilty of a felony and, upon conviction, must be imprisoned not less than one year nor more than fifteen years.
(C) The term of imprisonment is consecutive to the original sentence and to other sentences previously imposed upon the escapee by a court of this State.