Devon Great Consols (DGC) was the largest copper sulphide vein system in Southwest England, with exceptionally high initial copper grades. Tin mineralization was identified deeper in Wheal Emma, indicating polymetallic potential. The deposit has not been subjected to modern drilling techniques since its closure in 1903, leaving much of the DGC Main Lode unexplored. Tamar has a drilling program planned to test the unmined down-plunge and along-strike potential.