Section 45.3 - Identification of independent contractors(a) Any independent contractor may obtain a permanent MSHA identification number. To obtain an identification number, an independent contractor shall submit to the District Manager in writing the following information:(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.45 FR 44496, July 1, 1980, as amended at 47 FR 14696, Apr. 6, 1982; 60 FR 33722, June 29, 1995 Pub. L. No. 96-511 , 94 Stat. 2812 (44 U.S.C. 3501 et seq.)