In February 2000, Yukon Government Mineral Resources Branch convened a panel of industry geologists to estimate the likelihood of new discoveries in Cassiar Terrane and eastern Yukon-Tanana Terrane. The estimates were processed in a mineral deposit simulator. The simulated tonnage of metal for each tract (approximately 1000 km² of coherent geology) was converted to a dollar value, which in turn was used to rank the tracts relative to each other, from lowest to highest mineral potential. Separate runs of the simulator for significant deposit models were completed to produce model specific maps.