Alex Stewart International offers a comprehensive operational auditing program of the mining and oil extraction industries to assist governments in the accurate determination of the amount of royalties and taxes due from the companies operating in the country and in the environmental preservation of the extraction areas.

The purpose of the Mineral and Hydrocarbon Auditing Program is to safeguard the country's interests by effectively checking if the declarations of the mining and oil extraction companies are thorough and correct, and not omitted or misstated either willfully or by mistake. Due to the complex nature of oil extraction and large mining operations, tax authorities usually lack the technical expertise to delve into the operational and financial complexities of those companies.