[Code of Federal Regulations] [Title 36, Volume 2] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 36CFR228.50] [Page 150] TITLE 36--PARKS, FORESTS, AND PUBLIC PROPERTY CHAPTER II--FOREST SERVICE, DEPARTMENT OF AGRICULTURE PART 228_MINERALS--Table of Contents Subpart C_Disposal of Mineral Materials Sec. 228.50 Production records. At least annually, the purchaser or permittee must furnish a record of the volume extracted, in cubic yards or weight equivalent, to the authorized officer. The units of measurement must correspond to the units used in the appraisal or estimate.