The Edna and Grace C is located in the vicinity of the Edna No. 2 Crown grant (Lot 5698). This Crown grant is near the west shore of Marsh Adams Creek about 6 kilometres from its confluence with the Westfall River.
The area is underlain by units of the Cambrian to Devonian Index Formation, Lardeau Group including grey phyllite, grey limestone, graphitic schist, chlorite schist and sericite pyrite schist. Field observations suggest complex folding and faulting within the property area.
It was reported in 1898 that the Primrose Gold Mining Company of Rossland were the owners of the promising Endora and Grace C claims. The Endora fraction (Lot 4716) is located about 2 kilometres north of where the Edna and Grace C are thought to be. In 1899, the Edna and Grace C had about 100 metres of underground development. The No.1 crosscut was driven to tap the lead at 91 metres. The other work consisted of a drive on the lead with the face being in white quartz impregnated with galena and with a 15 centimetre vein of grey copper (tetrahedrite) on the hanging wall. The Edna and Grace C were both Crown-granted in 1901 as Lot 4703 and Lot 4704 respectively.
The area was largely inactive until the 1980s when a number of the old workings came into the possession of Jack and Eric Denny, through purchase or staking. The two rehabilitated many of the access trails and workings in the area of Galena Creek and to the east (to Marsh Adam Creek) and north. Some of the historically documented mineral occurrences were found and examined during this period but the mineralization was examined more as a whole than as individual showings. In 1988, Gold Range Resources Inc. held the property under option. They investigated the "Primrose adit" just southwest of the Silver Leaf Crown grant (Lot 4699). See the Silver Leaf (082KSW204) for further details.
During 2006 through 2009, Mineral Mountain Resources Ltd. completed programs of prospecting, geochemical (soil, silt, talus fines and rock) sampling and an airborne geophysical survey on the area as the Kootenay Arc property.
In 2006, mineralized float samples (RMK6024-6027) from the area yielded values from 2.480 to 12.000 grams per tonne gold, 610 to 1618 grams per tonne silver, 5.75 to 11.18 per cent lead, 1.32 to 4.37 per cent zinc and 0.26 to 2.83 per cent copper (Fingler, J. (2010-01-25): Technical Report on the Kootenay Arc Property).
