33 U.S.C. § 678 : US Code - Section 678: Modification and revocation of permit to mine

Search 33 U.S.C. § 678 : US Code - Section 678: Modification and revocation of permit to mine

The said commission may, at any time when the condition of the
navigable rivers or when the capacities of all impounding and
settling facilities erected by mine owners or such as may be
provided by Government authority require same, modify the order
granting the privilege to mine by the hydraulic mining process so
as to reduce the amount thereof to meet the capacities of the
facilities then in use; or, if actually required in order to
protect the navigable rivers from damage or in case of failure to
pay the tax prescribed by section 683 of this title within thirty
days after same becomes due, may revoke same until the further
notice of the commission.