1979-1980: A.P. Ginn and G.E. Parsons completed geological and magnetic surveys and diamond drilled at least 30 holes totalling at least 9,130 feet in the area.
1981: Diamond drilling (by H.E. Neal and Associates Ltd.?) in the north half of lot 4, concession IV is reported to have intersected high grade gold tenors.
1983: Geddes Resources Ltd. and Armco Minerals Exploration Ltd. diamond drilled a gold deposit in Hislop Township. Armco Minerals Exploration completed magnetic and IP electromagnetic surveys, trenching, and diamond drilled 7,170 feet in the area, including 6,969 feet
1984: Armco Minerals Exploration diamond drilled 5,500 feet in the area.
1986: Subsequent to about 7,000 feet of surface diamond drilling having been completed, Goldpost Resources Inc. initiated an exploration decline ramp to explore anomalous gold tenors associated with the north northeast striking Gibson Fault.
1987: Goldpost Resources crosscut 200 feet, diamond drilled 56 holes totalling 25,580 feet from underground, and extended the decline ramp an additional 1,900 feet to the vertical 400 foot level.
1988: Goldpost Resources completed a magnetic survey, extended by 2,000 feet the decline ramp, drifted 551 feet, diamond drilled from underground more than 25,000 feet.
1989: Drill defined reserves above the 400 foot level were reported to be 19,230 tons of material averaging 0.59 ounce of gold per ton. Goldpost Resources announced their intention to mine about 9,976 tons of material averaging 0.81 ounce of gold per ton from above the 250 foot level. Mining Corp. of Canada Ltd. purchased from Goldpost Resources their Hislop West deposit and announced plans to immediately begin production. Mining Corp. of Canada began mining in October of that year, According to Hemlo Gold maps for the Pike River project, about 8000 t were mined at a grade of 27.4 g/t Au.
1993-1995: Noranda, follwoed by Hemlo Gold explored a property to the east, north and and northwest.
1993: diamond drilling intersected gold values at the mafic volcanic-sedimentary rock contact zone to the east of the portal. None diamond drill holes totalling 2323 m. Drill hole intersects: PR95-27 - 3.5 g/t Au over 22.0 m, PR95-28 - 2.1 g/t AU over 23.2 m, PR95-29 - 1.7 g/t Au over 8.0 m, PR95-30 - 6.4 g/t Au over 14.4 m, PR95-31- 6.5 g/t over 1.0 m, PR95-32 - 5.0 g/t over 1.5 m and 3.8 g/t Au over 1.6 m, PR95-33 - 8.8 g/t Au over 1.0 m, PR95-34 - 10.4 g/t Au over 4.0 m.
The mine area is almost entirely glacial drift covered. Bedrock geology and structure in the area are complex and not well understood. The results of the mapping cited above and of exploration diamond drilling (ass. and expl. files, Res. Geol. Office, Kirkland Lake) suggest that the mine is hosted mainly by variably sheared and variably altered weakly metamorphosed (greenschist or lower metamorphic facies, except marginal to sizeable intrusive bodies, where contact aureoles of amphibolite grade may be developed) subcutaneously deposited tholeiitic and komatiitic volcanic and interflow sedimentary rocks. Intrusive rocks in the area include dikes and irregularly shaped bodies of mafic and felsic syenite, hb syenite, hb diorite, and narrow (metre scale or less) dikes of biot lamprophyre. Narrow (generally tens of metres in width) north striking diabase dikes of the (Proterozoic according to Heaman 1989) Matachewan swarm also occur in the area. The mine is indicated by Johnstone and Trowell (1985) to be about 1,100 m SW of the interpreted location of a relatively narrow PDFZ while Jensen (1985) indicated that it is within a much wider PDFZ. The deposit appears to be hosted by either: a) (Archean) Stoughton-Roquemaure Group rocks which occur south of the PDFZ and occupy part of the north limb of the east striking and east plunging Blake River Synclinorium; or b) a lith. and struct. complex bedrock assem. which is spatially ass. with the PDFZ and which is termed by Jensen and Langford (1985) the Porcupine-Destor Complex. A recent geophysical survey of Hislop Township (OGS 1984) failed to detect any anomalous bedrock conductors to coincide with the location of the mine.
The Hislop West Mine is on land which has been patented for many years. Consequently, very little information concerning the work performed to explore and delineate anomalous gold mineralization here has been formally reported to the provincial government. Scanty information in the assessment and exploration files indicates that the mine consists of anomalous gold tenors associated with variably sheared, brecciated, and variably altered (carbonatized, silicified, feldspathized, hematized, serpentinized, sericitized, and epidote altered) mafic to ultramafic and interflow sedimentary rocks and intrusive hornblende syenitic and biotite lamprophyric dike rocks. The local supracrustal basement assemblage appears to strike about 140, to dip steeply southwest, and (possibly) to face southwest. The anomalously auriferous zone which constitutes the Hislop West Mine in 1983 was reported (assessment and exploration files) to: a) have had a true width of 12.7 feet; b) to strike 065-070; c) to dip from about 70 degrees north to nearly vertical; d) to have been traced via surface diamond drilling laterally for at least 245 feet and to a vertical depth of 310 feet; and e) appears to be an auriferous fault or shear zone oriented orthogonally to what geologists with H.E. Neal and Associates Ltd. Troop (1989) reported that at the Hislop West Mine, mineralization is confined to discrete, high grade quartz veins near the brecciated and altered contact zone between syenite and basalt.
Hislop West Mine
1959- 1960: The property was controlled by Gunnar Mining Ltd. Hislop Mines Ltd. surrendered its charter in 1960
1961: 8 contiguous claims (6 in Hislop Township and 2 in Guibord Township) of the group formerly held by Hislop Mines, including the claim in Hislop Township on which the 2 shafts are located, were owned by P.H. McCloskey, of Toronto
1962: Western Surf Inlet Mines Ltd. diamond drilled from surface three holes totalling 1,284.8 feet near the No.2 shaft.
1984: Canamax Resources Inc. reported that 2 grab samples of quartz vein material obtained from the eastern outcrop (along the west side of Highway 572) averaged 7.31 and 0.96 ppm of gold. Matachewan Consolidated Mines Ltd. diamond drilled 3 holes
1988: Noranda Exploration Co. Ltd. and, subsequently, Alban Explorations Ltd., acquired from Matachewan Consolidated Mines the right to explore the property. Outcrop stripping and geophysical surveys were completed, diamond drilling by Noranda Exploration Co.
1995: Royal Oak Mines Inc. mined 43 308 tons of ore from the pit to produce 4171 ounces of gold.