Alex Stewart International provides professional inspection, sampling, assaying and consultancy services to the mining exploration, metals and minerals, oil, recycling, petrochemical, agricultural, and environmental industries. Since its founding, ASI has become the largest independent assayer in the world for metals and minerals and the foremost operational auditor of petroleum and mining concerns for government control purposes. ASI’s laboratories are accredited to international standards and the company is a member of various prestigious international inspection and testing associations.