The Big Hammer 625 occurrence is located 1 kilometre northeast of Williams Creek approximately 13 kilometres southeast of Terrace.

The showing is underlain by the Permian and older Mount Attree volcanics of the Zymoetz Group. Mineralization occurs as quartz-pyrite-telluride-chalcopyrite veins hosted in meta-basalts and meta-rhyolites.

The discovery of the Big Hammer 625 showing was made in 2006 by Nelson and Kennedy of the British Columbia Geological Survey while logging fresh roadside outcrops during a regional geological mapping program.

The property was staked by Doug McRae who then optioned the property to Jet Gold Corp. in 2010. In 2011, Jet Gold Corp. completed channel and rock sampling at the Big Hammer 625 vein. Highlights of the sampling include grab sample E5211038, which assayed 12.5 grams per tonne gold, 42.4 grams per tonne silver, 35 grams per tonne tellurium and 0.218 per cent copper (Assessment Report 33393).

In 2013, Jet Gold Corp. conducted exploration of its Big Hammer gold-silver-tellurium property. In January, a small-scale gravity testing pilot commenced to determine feasibility of low-cost gravity separation of potential concentrate from gangue (waste). The continuing small-scale gravity concentration test has been undertaken to determine the suitability of potential ore-grade material from Big Hammer for four key aspects: suitability for free gold separation by a low-cost gravity system; crushing/grinding requirements to free sulphides and gold; determination of the ratio of gangue (waste) to concentrate; determine the chemical content of the gangue. Phase one of the testing is focused on basic system design and protocol prior to running larger samples. With the positive success of the first phase of this trial, further work will include collection and processing of large samples from the 380 (103I 237) and 625 (103I 238) veins. Initial results from a random composite sample of various quartz vein material from Big Hammer has determined that an inexpensive gravity system can easily concentrate potential ore at a minimum of 2:1 ratio, with a milling target of approximately 80 mesh (0.18 millimetre).