“ Whenever a contracting officer of an executive agency has reason to believe that forced or indentured child labor was used to mine, produce, or manufacture a product furnished pursuant to a contract subject to the requirements of subsection 3 (a) of this order, the head of the executive agency shall refer the matter for investigation to the Inspector General of the executive agency and, as the head of the executive agency or the Inspector General determines appropriate, to the Attorney General and the Secretary of the Treasury. ”