The Boulder (Dot Com) occurrence is located north west of Abbot Lake, approximately 6.1 kilometres west of Horsefly.
The area is underlain by basalts and volcaniclastics of the Upper Triassic Nicola Group.
Locally, a greenish- grey to black, fine- to medium- grained plagioclase-pyroxene phyric basalt fragments within a 200 metre thick polylithic felsic breccia unit host disseminated and stringers of bornite locally rimmed with chalcocite and covellite. Malachite and minor azurite occurs along fractures and locally dispersed in voids throughout the rock. Very fine grained (dusting) galena also occurs within the rock along with minor disseminated native copper.
Samples of the mineralized fragments yielded up to 5 per cent copper, 1 per cent lead and 171.43 grams per tonne silver (Assessment Report 27121).
The immediate area of the showings has been staked numerous times in the past and subjected to cursory exploration programs. Nothing in the public records indicates that the high- grade, West zone showing was ever observed. This prospect was first found in approximately 1993 by prospector Jack Brown-John, who spotted a massive copper-stained chalcocite float in the creek bed. The origin of the 7 metre adit (now caved) is unknown, but likely dates back to the early 1900s or beyond.
In 1984, Ark Energy Ltd. and Pacific Ridge Resources Corp. completed two vertical, shallow NQ core holes, totalling 158.5 metres, to test for gold-bearing white channel gravel deposits, but intersected only Triassic basalts below the assumed gravel horizon. In October 1996, White Channel Resources Corporation completed a total of 805 metres of NQ coring in three vertical holes. Holes WC 109601 and 109602 were drilled south of the highway on the Miocene bluff and did not reach Triassic bedrock. Hole WC 109603, located about 50 metres west of the main Gravel Creek copper-silver showing, was cored to a depth of 367.9 metres. The upper portion of this hole, between 50 and 200 metres depth, intersected an epithermal vein swarm carrying traces of chalcopyrite, bornite, chalcocite, and rare traces of sphalerite. At the conclusion of this program, all the White Channel Resources claims were allowed to lapse.
During mid-1999, Herb Wahl and Jack Brown-John staked the Dot Corn claims and later the Rim claims. Subsequent work carried out by the two included prospecting, a wide- spaced enzyme leach soil survey and conventional soil sampling followed by test pitting and trenching. In late 2002, Phelps Dodge signed a joint venture agreement on the property with the owners.
During the latter part of 2002 and early 2003 core drilling concentrated on further development of the Bird Drop showing and Boulder showing areas. Seven core holes were drilled for a total of 1009.7 metres. Results of drilling in 2002 and 2003 (one hole, RP02-05) indicate that the breccia unit does not contain a significant amount of concentrated mineralized material to be of ore grade. The claims were subsequently allowed to lapse.
In 2011, a soil sampling program was completed to expand the 2009 soil grid. This program identified a copper-lead-zinc-silver soil anomaly greater than 1 kilometre long and up to 300 metres wide with in the northern section of the Central Shear zone. The following year, a program of test pitting was completed but failed to reach bedrock.
