Sigma Lithium Corporation has named Alexandre Mattos as its new environmental director. Mattos has 18 years of experience operating every operational environmental aspect of a large producer in metals and mining. He has served at Kinross Mineracao Brazil.

He has worked there for more than 10 years and managed a team of 53 full-time employees and an additional 30 contractors. Mattos is an environmental engineer and has a master's degree in Land Planning and Environmental Management from Universitat de Barcelona, Spain. He also has a post graduate degree in Occupational Safety from PUC in Brazil and an MBA in Environmental Studies from Fundacao Getulio Vargas in Brazil.