The Santo Tomas project is a copper porphyry deposit defined by a total of 106 diamond drill and reverse circulation drill holes, totalling approximately 30,000 m. In July of 1994, Bateman Engineering Inc. conducted an economic assessment of the Santo Tomas project based on technical work by a team that included Mintec, Inc., Mountain States Research and Development, Inc., and Minetek S.A. de C.V. Bateman completed this study, termed “Santo Tomas Project, Sinaloa, Mexico, Pre-Feasibility Study.