For nearly five decades , U & M Mineração e Construção Ltd ( U & M ), a prominent mining contractor and heavy-construction powerhouse , has been leading the Brazilian market with its unparalleled expertise in earthworks , mine development , and material handling services . The company ’ s extensive experience in remote areas , combined with a well-trained team of experts and a state-of-the-art fleet , uphold its commitment to efficiency , safety , and quality across every project . Indeed , U & M ’ s pride and joy is its fleet , which stands as the ultimate solution for operating open-pit mines , regardless of the deposit type or material being mined . To support its operations , U & M relies on its efficient logistics , which guarantee precision and agility while transporting equipment , parts , and other goods , all while strictly adhering to deadlines . Commercial Director , Mauricio Casara , gives an overview of the company ’ s early days and evolution .