Code of Federal Regulations Title 30. Mineral Resources § 30.45.3 Identification of independent contractors

(1) The trade name and business address of the independent contractor;

(2) An address of record for service of documents;

(3) A telephone number at which the independent contractor can be contacted during regular business hours;  and

(4) The estimated annual hours worked on mine property by the independent contractor in the previous calendar year, or in the instance of a business operating less than one full calendar year, prorated to an annual basis.