Code of Federal Regulations Title 43. Public Lands:  Interior § 43.2.27 When will the bureau notify a submitter of a request for their possibly confidential information?

(a) Except as outlined in § 2.29 of this subpart, a bureau must exercise due diligence to promptly notify a submitter in writing when it receives a FOIA request if:

(b) If a voluminous number of submitters are involved, the bureau may publish a notice in a manner reasonably calculated to reach the attention of the submitters (for example, in newspapers or newsletters, the bureau's Web site, or the Federal Register) instead of providing a written notice to each submitter.