Gold and silver mining companies and the producers and transporters of cyanide used in gold and silver mining can become signatories to the Cyanide Code. By becoming a signatory, a company commits to follow the Cyanide Code’s Principles and implement its Standards of Practice. The operations of Cyanide Code signatories must be audited by independent third-party auditors to verify their compliance with the Cyanide Code. While some base metals operations use cyanide in their processes, at present the Cyanide Code program is focused on gold and silver operations using cyanidation for the recovery of gold and silver.