Any person who shall willfully and unlawfully injure, destroy or obstruct the use of any telegraph or telephone line constructed by virtue of this chapter, shall, for the first offense, pay to such company the sum of one hundred dollars, to be recovered as debts of like amount are by law recoverable, and be liable for all damages, and shall for the second offense, be liable to imprisonment in the county jail not to exceed one year.
N.J.S. § 48:17-21