30 U.S.C. § 6 : US Code - Section 6: Personal interest of director and members of Bureau in mines

Search 30 U.S.C. § 6 : US Code - Section 6: Personal interest of director and members of Bureau in mines

In conducting inquiries and investigations authorized under
sections 1, 3, and 5 to 7 of this title neither the director nor
any member of the United States Bureau of Mines shall have any
personal or private interest in any mine or the products of any
mine under investigation, or shall accept employment from any
private party for services in the examination of any mine or
private mineral property, or issue any report as to the valuation
or the management of any mine or other private mineral property.
Nothing herein shall be construed as preventing the temporary
employment by the United States Bureau of Mines, at a compensation
not to exceed $10 per day, in a consulting capacity or in the
investigation of special subjects, of any engineer or other expert
whose principal professional practice is outside of such employment
by said bureau.