The company said that the project, which covers some 16 500km2 , had the scale and potential to support multiple opencut and underground mining operations producing substantial export thermal coal tonnage.
The project is also located in close proximity to infrastructure, with the Mount Isa to Townsville rail line running across the project area.
Further drilling would now continue up dip to expand the potential opencut resources, said Guildford.
Guildford holds a 56% stake on the White Mountain project, with the remaining interest held by fellow listed Tiaro Coal.
Pre feasibility Study has been commissioned for White Mountains Project with a mining lease application expected to be lodged mid 2012.