In line with the mining operations in the provinces of Lundas Norte and Sul, we were able to witness the complexity of all the engineering work, developed with alluvial diamond deposits in mind, which became more valued from 2018 onwards, with the implementation of a new commercialization model, which eliminated the so-called “preferred customers”. The first stop was at N’zaji, municipality of Cambulo, base of operations of SMC (Sociedade Mineira do Chitotolo), since 1986, with