30 C.F.R. § 35.11 Material required for record.
Title 30 - Mineral Resources
MSHA may retain for record all or part of the material submitted for testing. Any material that MSHA does not require will be returned to the applicant at his expense upon receipt of his written request and shipping instructions not more than 6 months after the termination or completion of the tests. Thereafter MSHA will dispose of such surplus material as it deems appropriate.
Title 30: Mineral Resources
PART 35—FIRE-RESISTANT HYDRAULIC FLUIDS
Subpart A—General Provisions
§ 35.11 Material required for record.

