The Lo occurrence is located approximately 1.2 kilometres north of the western end of Hen Ingram Lake at an elevation of 1006 metres.

Regionally, the area is underlain by interbedded marine sedimentary and volcanic rocks of the Upper Triassic Nicola Group. These have been intruded by stocks of syenitic to monzonitic composition to the south and are overlain by Holocene basaltic volcanic rocks to the northwest.

Locally, strongly hornfelsed Triassic black argillites, tuffs, siltstones, sandstones and fine-grained volcaniclastics strike northerly and may be isoclinally folded. Dips are steep, but uniformly eastward. Gabbroic to dioritic dikes up to 30 metres wide trend northeast and lamprophyric dikes up to 2 metres wide cut the metasediments. Major faults appear to be later than the dikes. Although no intrusion has been mapped in the area, the rocks are hornfelsed, suggesting that an intrusion is present at a relatively shallow level. Alteration minerals variably include silica, chlorite, potassium feldspar, tremolite and actinolite. Oxidation is common in areas of exposed bedrock with malachite being noted some outcrops.

Mineralization comprises disseminations and fracture fillings of pyrite, pyrrhotite with minor chalcopyrite and trace sphalerite associated with the altered (hornfelsed) metasediments and intrusives. Stratabound semi-massive to massive pyrrhotite mineralization and sulphide-bearing quartz-carbonate veinlets and pods are also present. Gold mineralization is primarily associated with pyrrhotite and chalcopyrite in zones of siliceous alteration.

The main mineralized zone has been exposed intermittently by trenching over a length of approximately 450 metres and a width of 125 metres. The strongest zone of mineralization, part of the main zone, has been interpreted to have a true width of approximately 8 metres, trend 300 to 315 degrees and dip 80 degrees west. Another zone of similar mineralization has been identified by trenching and drilling approximately 450 metres to the southwest.

In 1966, a sample of sulphide-rich chert assayed 1.41 per cent copper and 2.05 grams per tonne gold (Property File - J.R. Woodcock [1966-06-15]: Monthly Report - May 1, to June 15, 1966). The following year, a sample of percussion drill cuttings assayed 0.10 per cent copper and 0.32 gram per tonne gold, whereas a sample of mineralized tuff assayed 0.84 per cent copper (Property File - Mastodon Highland Bell Mines [1967-02-15]: Report - Cariboo project 1966).

In 1969, select samples of a narrow siliceous section from a trench are reported to have assayed up to 73.00 grams per tonne gold (Assessment Report 15231).

In 1979, three select samples from the 1965 No. 1 trench are reported to have assayed from 0.55 to 11.56 grams per tonne gold with up to 206.2 grams per tonne silver (Assessment Report 15231).

In 1980, chip sampling of the former 1965 trench No. 1 averaged 0.29 gram per tonne gold over 74 metres, including 0.74 gram per tonne gold and 0.170 per cent copper over 8 metres (sample 1992), 0.78 gram per tonne gold over 10 metres (sample 1985) and 0.21 gram per tonne gold with 0.250 per cent copper over 2 metres (sample 1988), whereas two specimen samples assayed 9.99 and 19.63 grams per tonne gold, respectively (Assessment Report 9122). Percussion drilling, located near the trench, yielded up to 1.28 grams per tonne gold over 9.14 metres, including 2.46 grams per tonne gold over 1.52 metres in hole P7 and 1.03 grams per tonne gold over 12.19 metres in hole P1 (Assessment Report 9122).

In 1986, a select sample (HG-54) assayed 64.64 grams per tonne gold, 8.0 grams per tonne silver, 0.170 per cent cobalt and 0.127 per cent copper, whereas six other samples yielded from 1.21 to 37.00 grams per tonne gold with anomalous molybdenum values up to 0.044 per cent (Assessment Report 15231).

In 1989, rock samples yielded up to 5.00 grams per tonne gold (Assessment Report 18941).

In 1992, a grab sample (HJR-1) from the main trench assayed 4.98 grams per tonne gold, 9.3 grams per tonne silver and 0.515 per cent copper (Assessment Report 22587). The following year, sampling of trenches located approximately 450 metres southwest of main trench yielded up to 19.70 grams per tonne gold, 20.0 grams per tonne silver and 0.343 per cent copper (sample HJR-49; Assessment Report 22898).

In 1995, diamond drilling of the main zone yielded intercepts of 9.51 grams per tonne gold over 1.2 metres in hole 95-1; 5.64 grams per tonne gold over 0.6 metre in holes 95-2; 1.85 grams per tonne gold over 14.2 metres, including 7.11 grams per tonne gold over 1.9 metres, in hole 95-3 and 21.24 grams per tonne gold over 0.5 metre in hole 95-5 (Assessment Report 24052). Porphyry copper mineralization was intersected in drillhole 95-4, with values up to 0.213 per cent copper over 0.6 metre and an average of 0.092 per cent copper and 0.1 gram per tonne gold over 10.6 metres (Assessment Report 24052). Trenching performed at this time yielded up to 5.14 grams per tonne gold over 5.2 metres, including 14.26 grams per tonne gold over 1.5 metres in trench 95-3 (Assessment Report 24052).

In 2004, a rock sample (VH-1) from a malachite-stained shear with quartzcalcite, located a few hundred metres west of the main trench, assayed 0.55 gram per tonne gold, 9.7 grams per tonne silver and greater than 1.00 per cent copper (Assessment Report 27514).

In 2006, sampling of trenches yielded up to 13.22 grams per tonne gold over 5 metres (Assessment Report 31011). Other trench samples from the southwestern zone are reported to have yielded up to 3.82 grams per tonne gold over 4 metres (TR06-12) and 1.68 grams per tonne gold over 6 metres (TR06-12; Assessment Report 34239).

In 2008, diamond drilling on the main zone yielded intercepts of 2.49 grams per tonne gold with 0.11 per cent copper over 2.64 metres in hole HE8-01; 0.39 gram per tonne gold over 33.75 metres, including 15.66 grams per tonne gold over 0.45 metre, in hole HE8-02; 9.47 grams per tonne gold with 0.38 per cent copper over 0.45 metre in hole HE8-03 and 1.26 grams per tonne gold over 8.53 metres, including 12.6 grams per tonne gold with 0.18 per cent copper over 0.45 metre, in hole HE8-04 (Assessment Report 31011). Anomalous cobalt values, up to 0.246 per cent over 0.45 metres, were also encountered associated with stratabound sulphides (Hole HE08-04; Assessment Report 31011). A lone drillhole (HE8-06) on the southwestern zone assayed 2.73 grams per tonne gold over 1.75 metres (Assessment Report 31011).

Another area of anomalous mineralization, identified by reverse-circulation drilling and located approximately 6.5 kilometres to the southwest on the ‘Viewland’ zone, comprises propyllitically altered fine-grained diorite to monzodiorite and andesite tuff hosting 2 to 10 per cent disseminated pyrite and pyrrhotite. Traces of chalcopyrite are also reported. In 2012, drilling yielded two intervals assaying greater than 0.1 per cent copper over 2 metres (Assessment Report 33607).

In 1965, Helicon Explorations began work on the property in their search for porphyry copper mineralization and completed an induced polarization survey, bulldozer trenching and five diamond drill holes, totalling 91.8 metres, on the area as the LO and KE claims. In 1979, Stanley Resources Ltd. staked the area as the B.T.E.M. 1-2 claims and the following year completed a program of rock sampling and nine percussion drill holes, totalling 158 metres, in the vicinity of the past 1965 trench No. 1.

During 1983 through 1986, BHP-Utah Mines completed programs of geochemical sampling (rock, silt and soil) and geological mapping on the View 1-13 claims located to the southwest. In 1985 and 1986, Welcome North Mines and Esperanza Resources completed programs geological mapping and sampling on the area as the Hen 1 claim. In 1989, Tulloch Resources established a cut grid for control and completed geological mapping, soil and rock sampling and a magnetometer survey.

During 1992 through 1995, Double Creek Mining Corp. completed programs of geological mapping, prospecting, rock and soil sampling, 31.7 line-kilometres of combined VLF-EM and magnetometer surveys, excavator trenching and six diamond drill holes, totalling 609.3 metres, on the area as the Hen 1-4 claims.

During 2004 through 2006, work consisted of follow-up sampling of the 1995 diamond drill core, restoring and resampling parts of the grid, prospecting, minor expansion of the original soil sample grid, and analysis of the new samples. Later in 2006, Swift Resources Inc. optioned the property and completed a program of prospecting, geochemical (soil and rock) sampling and 13.4 kilometres of combined induced polarization and magnetometer surveys. In 2008, eight diamond drill holes, totalling 1206.0 metres, were completed on the Hen 1 claim.

During 2008 through 2012, Bullion Gold Corp. completed programs of soil sampling, a 45.5 line-kilometre induced polarization survey and 1874.0 line-kilometres of airborne geophysical surveying on the surrounding area as part of the Viewland, Cariboo Goldfields and Horsefly properties. Also at this time, seven reverse-circulation drill holes, totalling 1043.9 metres, were completed on the Viewlands zone of the property to the southwest.

In 2013, a program of rock sampling and trenching, totalling 598.0 metres, was completed on the Hen property.