Cliff-Miles porphyry system lies on the southern end of the 7.5 km long Hawilson Monzonite (‘HM’) complex. Porphyry copper-gold mineralization is associated with north-south trending corridor of Jurassic age (191 Ma) monzonite porphyry intrusions and breccias hosted by upper Triassic Stuhini Group rocks. The porphyry system is proximate to the Triassic-Jurassic unconformity; referred to as the “Red Line” (Kyba 2014) recognized as an important geological horizon for copper-gold deposits in the Golden Triangle. The geology and metallogeny of the Cliff porphyry system is similar to the Kerr Deposit of Seabridge Gold’s KSM project, which has an inferred resource of 1.92 billion tonnes grading 0.41% copper and 0.31 g/t gold, containing 19.0 million ounces of gold and 17.3 billion pounds of copper (Seabridge New Release Feb 16, 2017).