Technical Team

Charles Henrique Sales Valadão

CharlesProfessional with over 34 years of experience in the mining industry in the areas of Resources and Reserves Estimation, Mine Planning, Mine Projects, Investments Analysis, Operating Cost Reduction and Quality Control. He worked for multinational and Brazilian companies such as Vale, Anglo American, MMX and Votorantim Metais. Master of Mineral Economics by Curtin University (Perth, Australia), Postgraduate in Mineral Economics by Universidad de Chile (Santiago, Chile), MBA in Finance by IBMEC (Belo Horizonte, MG) and Bachelor in Mining Engineering by UFMG.


Luiz Ricardo Duca Santos

Mining Engineer with over 30 years of professional experience in iron, manganese and chromite mining industries, in the areas of mine planning in short, medium and long term. Since the preparation of monthly operating plans to the generation of pit and multiannual sequencing of mining.

Effective participation in the development of SGDEM, Management System and Design of Mine Equipment, to standardize and define procedures of sizing calculation the mine equipment for application in the area of ferrous with application in other business areas of the Valley. Project completed in 2014.


José Ildefonso Gusmçao Dutra

IldefonsoGraduated in Mining Engineering by Federal University of Minas Gerais (UFMG) and in Mechanical Engineering by the Federal Center of Technological Education of Minas Gerais (CEFET). MSc in Metallurgical and Mining Engineering from the Federal University of Minas Gerais and PhD in Mining Engineering from the Technical University of Lisbon. He was a professor at the Federal University of Minas Gerais for more than 30 years and also acted as a consultant. Experience focused in ​​Mining Engineering, working mainly on the following topics: mining planning, open pit mining, rock clearing, ornamental stone mining, mining applied computing, mineral reserves evaluation and production scheduling.


Gabriela Machado Rodrigues

Experience in Capital Projects area, acting with the readiness operation Project Iron Carajás S11D. She currently integrates VCE’s technical team, working on several projects such as mine planning using the Minemax Scheduler software.

Bachelor in Mining Engineer at Federal University of Minas Gerais (UFMG) with relevance in courses of Software of mine planning and geostatistic.



Lucas Gonçalves Rodrigues Lopes

Mining Engineer graduated from the Federal University of Minas Gerais (UFMG). He was part of the Mining Planning team of the Vallourec Mining Unit, working on short-term mine planning and open-pit mine operations.

He currently integrates VCE’s technical team, working on several projects such as mine planning using the Minemax Scheduler software.



Mauricio Alves Ferreira Santos

Geographer with more than 10 years of experience in ArcGIS, with post-graduation in Geoprocessing by UFMG (2005). Works with geological maps since 2005, in the Company of Research Mineral Resources (CPRM), Mineração Usiminas and HGT Geoprocessamento.

He worked at the company USIMINAS Mineração where he was in charge of cartography, geographic database, master plan, environmental studies using geoprocessing (ArcGIS), updating of cartographic maps through aerophotogrammetric images and satellites images.