Mr. Barboza is a senior geologist with an impressive background in mineral economics deriving from his comprehensive experience as a high staff government officer.

M.Sc., Mineral Economics - Colorado School of Mines, USA, 1972;

Several Graduate Extension Courses in Economics of Exploration, Engineering Economy, and Environmental Control;

B. Sc., Geology - Federal University of Pernambuco, Brazil, 1966.

Director of Mineral Development and Economy of DNPM: 1995-1997;

General Coordinator of Technology and Mineral Economy of DNPM: 1992-1995;

Director of Mineral Economics Division of DNPM - National Department of Mineral Production: 1979-1992;

Brazilian Government Representative in International Meetings and Forums Sponsored by Institutions like : Organization of American States - OAS (1982 and 1988); United Nations Conference on Tariffs and Trade - UNCTAD (1979 and 1985);

Coordinator, Exploration Economics of Gold in Brazil, a Technical Cooperation Agreement Project between CIDA; Canada and Brazil, 1988 ; 1991;

Technical Consultant, Geology, Mining and Pollution Control Project, Technical Cooperation Program of JICA; Japan and Brazil, 1980;

Head of Mineral Economics Section, 4th Regional District of DNPM: 1971-1979;

Consultant: United States Inter-Regional Seminar on Economics of Mineral Engineering, Ankara; Turkey, March 1976;

Head of Exploration & Mining Geology, Mineração Brejuí and Others (tungsten), 1967-1970;

Extensive list of works, articles and reports published.