Sand and Gravel Excavation Act Article 47

Those who have obtained a Sand and Gravel Excavation Permit Certificate and a Sand and Gravel Excavation Field Registration Certificate in accordance with the Sand and Gravel Excavation Regulations prior to the entry into force of this Act shall apply to the Competent Authority of the Special Municipality or County (City) for replacement of the certificates within three months from the date this Act enters into force; if no application for replacement is filed within that period, the original certificates shall become invalid.Where a sand and gravel excavator, in applying for replacement under the preceding paragraph, also files an application for extension, it may continue excavating until the Competent Authority of the Special Municipality or County (City) approves or rejects the applications.