The Bayhorse Silver Mine is now in an active mining state, where the mineralized material extracted from the mine is being upgraded using a state of the art “Steinert” Ore-Sorter, before further processing at its Flotation Facility, where a silver concentrate is produced.
The Bayhorse Property has been historically identified as the location of the largest silver deposit found in the state of Oregon.Mining has been conducted intermittently at Bayhorse since the early 1920’s and the mine last closed after the price of silver dropped to under US$6/oz in late 1984. The Bayhorse mine has two existing accessible rehabilitated adits where mineralized material is being extracted.
With a maiden resource comprised of 292,300 short tons at an average grade of 21.65 troy ounces per ton (opt) silver (Ag) for total contained silver of 6,328,400 ounces. The mineralized material contains significant amounts of copper (Cu) and zinc (Zn), however the historic data utilized in the mineral resource estimate did not allow for a reliable calculation of the grade of Cu and Zn.
The main adit extends over 1,400 feet westward into the hill and the lower extending 600 feet into the hill. The Intermediate Level workings were accessed by an adit installed in 1984. Until then that level was reached only by raises from the lower level and winzes from the upper level. Three areas have been stoped in the ground between the upper and intermediate level.
The Bayhorse mineralization, consists mainly of acanthite, tehrahedrite/tennantite, and occurs in a 80 feet wide and 22 feet thick zone extending for a known 840 feet along an andesite and rhyolite contact. The Company has extended the thickness of the mineralized zones from 20 feet, to approximately 70 feet. Minor copper, arsenic, and vanadium are associated with the silver. Azurite and malachite coatings are common in oxidized parts of mineralized ground on the walls of the excavated stopes. Additional minerals include enargite, dufrenoysite and cuprodesclosite. Gold values of up to 10 g/t Au have also been reported in the mineralization.
There can be no assurance that additional work will result in the definition of the current resource being upgraded to a reserve.