The Initiative for Responsible Mining Assurance (IRMA) is pleased to announce the commencement of a third-party independent assessment of the Carrizal lead, zinc, copper and silver mine against the IRMA Standard for Responsible Mining. The Carrizal mine, located in Mexico, is operated by Carrizal S.A. de C.V. ERM Certification and Verification Services (CVS), an IRMA-approved…