Mr Amaral has extensive experience in niobium mining and production gained through more than 17 years with CBMM at its Araxa operations where his roles spanned licensing and permitting, implementation of ESG and sustainability programs, and quality control for processing and production. Senior leadership positions held by Mr Amaral included Global Quality and Product Regulation Coordinator, Head of Sustainability, and Business Development Manager in China.

Mr Amaral also served as a Professor of Engineering from 2008 to 2017 at the University of Araxá and the Santa Edwiges Escola Técnica.