Marlin Mine is located in the western highlands of Guatemala, 25 kilometres west-southwest of the town of Huehuetenango. Dumas conducts incline, decline and lateral development and the initial definition. Dumas also performs excavations in the ore zones to provide Montana with orebody access for production mining at this site.
Dumas excavated in excess of 33,000 metres of ramp and lateral development; crews routinely exceeded 750 metres of development on a monthly basis.