Dunwell Mines includes 32 Crown-granted claims (Dunwell, Lot 4286; Ben Hur (Silver Arrow Lot 870; George E, Lot 872, etc.) on Glacier Creek about 4 miles north of Stewart. 

Dunwell Mines Ltd. was incorporated in 1922 as a reorganization of Nass River Lands which was incorporated in 1913, included the showings originally staked by the Stewart brothers and W. Noble, of Stewart.

Early exploration was carried out on these claims by the Stewart Mining and Development Co. Ltd., which was absorbed into the Dunwell Mines Ltd. holdings. The first actual surface exploration in this section was performed by the original placer miners who set up sluiceways on the terrace gravels above the canyon of Glacier Creek.

Some of these benches are still visible from the air. In 1926 a 100-ton mill was constructed at the outlet of the canyon and an aerial tram about 1 mile long was built to connect the mill with the main adit at elevation 1,250 feet. The mine and mill operated for part of 1927 and shut down the same year for want of ore reserves.

The mineral deposit has been developed by four adits, all of which are accessible from the old camp area, which is now easily reached by a tote-road which connects to the Bear River road at the British Columbia Department of Highways gravel pit. Some of the camp buildings still stand, but the mill and storage bins have been undercut and caved by the rerouted Glacier Creek.

Dunwell mine production was slightly in excess of 50,000 tons of ore, which contained significant gold, silver, lead, and zinc. Almost all of this tonnage came from oreshoots in the " 23 " vein, one of several similar fissure veins found on the property. Surface exposures and trenches indicate that the vein system extends from the George E at Glacier Creek, north through Dunwell to the Sun-beam and Victoria showings. Past and recent efforts to prove the continuity of single veins by trenching and diamond drilling have been inconclusive, partly because of the heavy timber and overburden and partly because of the highly fractured nature of the country rocks.

Fissure veins in this area are found along what has been called the Portland Canal Fissure, a zone of faulting and fracturing apparently confined to graphitic Bowser siltstones, which uncomfortably overlie Hazelton conglomerates and breccias, and have been intruded by the Bitter Creek augite diorite porphyry, the Portland Canal, and lamprophyre dyke swarms. The rocks in the mine area are predominantly thin-bedded grey to black siltstones, greywackes, and minor intercalated quartzites. 

Outcrop in the Dunwell area is largely confined to gullies, a few road or trail cuts, and trenched sections, and the mine workings present the greatest continuous exposures.

Evidence of fold complexity is abundant and the confused nature of the structures is apparent along Glacier Creek. South of the creek a number of exposures of Glacier Creek augite porphyry have been mapped, indicating a probably larger mass at shallow depth plunging north under the Dunwell structures. One tongue of this pluton crudely parallels the fissure zone north of Glacier Creek just east of the mine. Contacts between the porphyry and the siltstones are marked by a narrow, bleached pyritic zone and by post-intrusive shear zones. The massive core of the Portland Canal dyke swarm cuts northwesterly across the country north of the mine, limiting any possible northerly continuation of Dunwell-type veins. 

A comparison of the properties will show that the Dunwell and other vein deposits in this sector are largely confined to a small area of Bowser  rocks isolated by Hazelton members on the west and elsewhere by plutons.

Mineralization on the Dunwell and adjacent George E, Sunbeam, and Victoria properties appears to comprise simple quartz-calcite breccia fissure veins in which isolated pods or lenses of sulphides have been localized. Slightly altered, angular, country rock siltstone fragments form a large part of the vein material, and open vugs are typical. Disseminated or replacement-type mineralization has not been encountered in the Glacier Creek sector so far as known. Sulphide minerals found in the main 23 vein at the DunweH included galena, dark-brown sphalerite, pyrite, chalcopyrite, as well as minor tetrahedrite, rare argentite, and ruby silver. 

Native silver and, reportedly, electrum were identified in some high-grade material. Within the veins the sulphides are present as thin, fine-grained streaks and as irregular medium- to coarse-grained masses. 

Oreshoots have been localized within dilatant or wide vein zones, coinciding roughly with vein flexures which appear to mark the loci of intersection of the two main fracture sets. The main oreshoot, apparently localized at structural intersections, was been diagrammatically. 

Apart from the Dunwell, other veins in the same environment have been generary unproductive. It is possible that attention to small features such as the vein flexure illustrated here will aid in furthering exploration and development on the Dunwell and 
other veins in the Glacier Creek section.