Wis. Stat. § 191.11: Revocation of certificate.

If any railroad company after obtaining a certificate that public convenience and a necessity require the construction of the whole or part of its railroad fails to begin construction within one year from the date of the certificate, or having begun such construction, fails to prosecute the same, the office may inquire into the reasons for such failure and may revoke the certificate, if the office finds, after notice and hearing, that such failure is unreasonable.