Classified National Security Information Protection Act Article 12

Classified information involving national security intelligence sources or channels shall have a classification period of no more than thirty years from the date of approval. If the conditions for declassification are not met after thirty years, they shall be deemed to have been met when the period expires. However, if the original approving agency reviews and deems it necessary to continue the classification, it shall state the facts and reasons and submit the matter to the authorized personnel for approval in the original approving agency or its superior agency. Paragraphs 2, 4, and 5 of the preceding article and Article 22 of the Archives Act shall not apply.The extension period prescribed in the preceding paragraph shall not exceed ten years at a time. If the classification period has exceeded sixty years from the date of the original approval, the extension shall be submitted to the authorized personnel for approval in the superior agency.The authorized personnel in the original approving agency or its superior agency, as mentioned in the preceding 2 paragraphs, shall determine whether to approve within two months after receiving the submission. If the deadline is not met, the classification extension submission shall be deemed to have been rejected.