Since 09-01-2003 MINERADORA TRES FRONTEIRAS, EXTRACAO EXPORTACAO DE PEDRAS E MINERAIS LTDA.-EPP. located in Sao Joao de Araguaia, is carrying on with the extraction and processing of the quartz mineral and chrystals. With over 40.000.000 m2 of lands, Simple but eficient machinery puts up with the production needs of M3F. M3F serves for companies in Brazil and also has a exportation capabilyties from the por of Belem in Para.