MINERAL INVENTORY FILE NO.
595
______________________________________________________________________________________________________
PRODUCT
COPPER
NTS AREA
64B5NE
REF.
CU 1
______________________________________________________________________________________________________
NAME OF PROPERTY
RUTTAN LAKE (KARL NO. 1-6)
OWNER OF OPERATOR ADDRESS
1987- Hudson Bay Mining and
Smelting Ltd.
1906-201 Portage Ave.
Winnipeg, MB, R3B 3K6
OBJECT LOCATED
Open Pit, Ruttan Mine
MINING DIVISION
The Pas
Latitude
5628'30"
Longitude
9938'14"
Uncertainty (m)
200 m
UTM Zone
14V
Easting
461900
Northing
6258700
L.S./Quarter Section
9
Section
19
Township
86
Range
14, 15 WPM
DESCRIPTION OF DEPOSIT
The Ruttan deposit is situated in the extreme eastern portion of the Rusty Lake greenstone belt; a belt of isoclinally folded Precambrian metavolcanics and metasedimentary rocks. The deposit appears to be continued to metavolcanic rocks containing numerous thin intercalated layers of metasediments (especially meta-argillite) and sills of diorite, and quartz diorite. The deposit also appears to be conformable with the metavolcanics. Dykes of granite gabbro, diabase, and andesite intersect the ore zones and the wall rocks.
The ore zones “appears to be, in part, structurally controlled along a northeasterly trending shear zone. However, the precise time relationship between ore emplacement and shearing is not known” (Steeves and Lamb, 1972, p. 48).
ASSOCIATED MINERALS OR PRODUCTS OF VALUE
Zinc, silver, and gold
HISTORY OF EXPLORATION AND DEVELOPMENT
The ore zone consists of two major and “en schelon” massive to semi-massive sulphide lenses which plunge 45 to the east, strike north 70 east, and dip 67 to the southeast. The ore body has an average length of 823 m (2700 ft) and an average width of 37 m (120 ft). The lenses overlap for part of their length, creating a “bulge” in the ore zone, that is up to 137 m (450 ft) wide in the centre section of the structure. This bulge has been traced downward on an easterly plunge to the 214 m (700 ft) horizon. The average width of the two individual zones is 20 m (65 ft) (Sherritt Gordon Mines Limited; Brochure of General Information – Ruttan Lake, Annual Report 1969; Steeves and Lamb, 1972, p. 48).
The Ruttan mine is situated in an area approximately 100 km southeast of Lynn Lake, and 125 km northwest of Thompson in northern Manitoba. The town of Leaf Rapids is located 24 km to the west of Ruttan mine. Leaf Rapids is accessible by Provincial Road No. 391 that connects Lynn Lake with Thompson.
During July 1968, an airborne geophysical survey, conducted by Sherritt Gordon Mines Limited, located anomalies in the vicinity of Ruttan Lake. Follow-up ground magnetic and electromagnetic surveys were conducted on the Ruttan anomalies. The site of the Ruttan Lake anomaly (August 1968) was staked as Karl No. 1-6 (P8855D-60D), by W.F. Clarke in August 1973. The area of the second anomaly, located approximately 9 km to the northeast of the Karl claims, was staked by L.F. Baribeau in September 1968 as Vol No. 1-18 (P9013D-30D)(Sherritt Gordon Mines Limited; Brochures of General Information on Ruttan mine).
In the fall of 1968, the area was included in the airborne INPUT electromagnetic and magnetic survey flown by Questor Surveys Limited, for the Manitoba Mines Branch, as part of the Southern Indian Lake Project. The Ruttan Lake copper (Cu)-zone “deposit corresponds to a 6-channel anomaly that was flanked to the east by a four-channel anomaly, and to the west by three and five channel anomalies” (Steeves and Lamb, 1972, p. 48).
In early April 1969, diamond drilling tested the Ruttan Lake anomaly. The first drill hole intersected a wide zone of Cu and Zn sulphide mineralization. This resulted in a program of additional staking about the Karl and Vol claims, and of increased diamond drilling activity. C.B. No. 804-850, 951-953 were staked by E. Freek, and D. Sweeny, in April 1969. By year’s end, a total of 2100 m (69 000 ft) of drilling had been completed. Ore reserves were calculated down to the 122 m (400 ft) level at 11.7 million tonnes (t) (12.9 million tons) averaging 1.44% Cu and 2.61% Zn (using a Cu-Zn equivalent to 0.70% Cu) (Sherritt Gordon Mines Limited; Annual Report 1969).
Initial plans called for an open pit and a decline to develop the orebody. Test drilling was done to determine overburden depths in the planned open pit and plant area. In March 1970, a 3629 t (4000 ton) sample was mine from the open pit area, and was tested in a pilot mill at Lynn Lake, to obtain design criteria for the concentrator.
During June 1970, various claims about the Ruttan Lake deposit were assigned to Sherritt Gordon Mines Limited.
The extensive drilling program was maintained until November 1970. A total of 115 holes were drilled involving 42 000 m (138 000 ft), bringing the total to 61 600 m (202 000 ft). Ore reserves, to the 610 m (2000 ft) level and based on the 0.70% Cu equivalent cutoff grade, were calculated to be 46.3 million t (51 million tons ) averaging 1.47% Cu and 1.61% Zn. No allowance for dilution was included. (Sherritt Gordon Mines Limited; Annual Report 1969).
In the latter part of 1970, a contract was let for the removal of approximately 1.9 million m3 (2.5 million yds3)of overburden from the open pit area, and construction of the mine site began in November 1970.
The decision to bring the Ruttan mine into production was made early in 1971 and production was scheduled for July 1, 1973. Initial requirements for the Ruttan mine were estimated to total $100 million. This included $40 million to bring the underground portion into production (Sherritt Gordon Mines Limited, Annual Report 1970, 1971, 1974).
The Karl and Vol Groups of claims, and C.B. No. 804-820, 850, 951-953 were surveyed, in 1972, as Lot No. 1-27 of group 522. In February 1973, a 21 year lease (M9476) was issued to Sherritt Gordon Mines Limited for Karl No. 1-6, Lot. 6. At the same time, 21-year leases were also issued for the other surveyed claims. Lot No. 1-5, 7-29 corresponds to Lease No. M9471-75, M9477-78, M9480-97.
Construction of the mine site, including the open pit, was completed by April 1973. The second phase of development (the decline) was started during July 1972, and by the end of 1973, had reached the 305 m (1000 ft) level. Drifting was also started at the 305 m(1000 ft) level.
The first Cu concentrate was shipped to Lynn Lake on April 23, 1973 and the first Zn concentrate followed in early June. Official production of the Ruttan mine began on July 1, 1973. (Sherritt Gordon Mines Limited, Annual Report 1973).
In 1974, approximately 60% of the Zn concentration were shipped to Mitsubishi Mining co. Ltd. and Mitsubishi Shoji Kaisha Ltd. in Japan. This was the first year of a 10 year contract with these companies, which had lent $15 million for development costs. The balance of the Zn concentrate was diverted to the Hudson Bay Mining and Smelting Co. Limited in Flin Flon for processing. Processing of the Cu concentrate was to be smelted and refined by Noranda Mines Limited, under a similar 10 year contact. During 1974, Noranda Mines Limited also diverted approximately two-thirds of the Cu concentrate to Flin Flon (Sherritt Gordon Mines Limited; Annual Report 1970, 1971, 1974).

Effective January 11, 1975, a 21 year lease status for the Ruttan mines property (lease no. M9471-78, M9480-97) was converted to either a production lease status or to a claim status. The production leases (P.L.) were issued for a 10 year term. The distribution of the claims is as follows:

P.L. Property
15............C.B. 951 (Lot 2), C.B. 804 (Lot 3) and parts of Karl 1 , 2 , 3,5,6 (Lot 6);
16............C.B. 812 (Lot 15), Vol 12, 13, 14, 15, 16, 17 (Lot 16) Vol 18 (Lot 20), C.B. 805 (Lot 9), C.B. 806 (Lot
................8) and parts of Karl 4,5,6 (Lot 6);
17............C.B. 805 (Lot 1), C.B. 807 (Lot 4), C.B. 808 (Lot 5) and parts of Karl 2,3,4,5 (Lot 6)
18............C.B. 815 (Lot 10), C.B. 820 (Lot 13), C.B. 813 (Lot 14), Vol 1,2,6,7 (Lot 18) C.B. 810 (Lot 25), and
................parts of Karl 5,6 (Lot 6)

During 1975, a conveyor system, installed in the decline from the 305 m (1000 ft) level to the surface, was put into operation. Drifting was done on the footwall side of the orebody on the 244 m (800 ft) level for detailed drilling of the orebody from the 188 m (600 ft) level to the 305 m (1000 ft) level. Also in 1975, the access decline was deepened at 15 to the 365 m (1200 ft) level.
Commencing in December 1975, the planned annual production rate was decreased from 3 180 000 t (3 500 000 tons ) to 2 540 000 t (2 800 000 tons) of ore (Sherritt Gordon Mines Limited; Annual Report 1975).
From 1976 to 1980, a crosscut was extended through the ore zones on the 365 m (1200 ft) level and a drift was driven into the hangingwall side. Sherritt also proceeded with deepening the mine to the 427 m (1400 ft) level with the intention of continuing to the 610 m (2000 ft) level to make the transition from an open pit to an underground mine (Sherritt Gordon Mines Limited, Annual Report, 1976). The headframe from the old A mine at Lynn Lake was transported to Ruttan, to be used with the new shaft. Sherritt continued with deepening the mine to 550 m, 610 m and 670 m (1800, 2000 and 2200 ft) levels by 1980.
An irregular ore body was found in 1981, this, along with consistently low Cu prices, led to cutbacks in production and a 15-week shut down of the mine. In 1983, $30 million was spent to deepen the mine an additional 200 m (650 ft).
In 1986, Sherritt Gordon announced it’s intent to sell or close the mine (Northern Miner, June 1, 1987) in an attempt to reduce the company’s $220 million debt, which included a $10 million loan from Manitoba Government. In 1987, however, Hudson Bay Mining and Smelting Co. Limited (H.B.M. & S.) took over the loan payments on to the government, assumed the property and prevented the closure of the mine.
In 1988, workers striked over changes in wage bonuses. In 1989, exploration began at the new Ruttan Lake W Anomaly, indicating 4 million t of probable ore. Production on this anomaly began in 1991 (Canadian Mines Handbook, 1992-1993, p.187).
In 1999, due to unprecedented low Cu prices, Hudson Bay announced the upcoming closure of mine, scheduled for 2003. In November 2001, however, it was announced that the mine would actually close in May of 2002 (Northern Miner, November 19-25, 2001), 18 months earlier than expected. With the remaining resources, as of January 2001, were proven and probable, 6.7 million t averaging 1.0% Cu and 1.7% Zn, the Ruttan mine closed on May 31, 2001 (Canadian Mines Handbook 2001-02, p. 189).
HISTORY OF PRODUCTION
Year........One Milled...Cu...Zn..... Cu, in...........Zn, in.......Ag.......Au
................(million......(%)......(%).....concentrate............... (000s oz) (000s oz)……tonnes)
.............(millions lbs)
1973……1.697……1.14……2.01....... 36.072……43.113……-……-
1974……3.046……1.07……1.68……61.934……78.686……-……-
1975……3.030……0.96……1.90……54.939……98.207……-……-
1976……1.229……1.14……2.00……-……-……-……-
1977……5.019……1.37……1.78……-……-……-……-
1978……2.543……1.17……1.57……52.268……62.276……-……-
1979……2.308……1.39……1.17……57.678……37.320……-……-
1980……2.548……1.36……1.02……62.293……30.378……-……-
1981……1.877……1.30……1.25……44.540……32.687……-……-
1982……0.865……2.16……0.14……35.796……-……-……-
1983……1.428……1.62……0.73……43.69……14.554……-……-
1984……1.558……1.47……0.91……42.741……21.156……-……-
1985……No statistics available for these years.
1986……
1987……-……-……-……56.0……24.0……405……15
REFERENCES
Canadian Mines Handbook 1993: Hudson Bay Mining and Smelting Co. Ltd.; Canadian Mines
Handbook 1992-93, p.187

Canadian Mines Handbook 2002: Hudson Bay Mining and Smelting Co. Ltd.; Canadian Mines
Handbook 2001-02, p.189

Manitoba Mineral Resources Division NE5 , 64B; Corporation files, Sherritt Gordon Mines Limited

Northern Miner 1987: Copper Prices Boost Hudson Bay Ruttan; Northern Miner, December
21, 1987.

Northern Miner 1989: Sherritt Gordon intends to dispose of Ruttan mine; Northern Miner,
June 1, 1989.

Northern Miner 2001: Ruttan to close sooner; Northern Miner, November 19, 2001.

Olsen, Mac 2002: Despite mine closure, Leaf Rapids moves on; Nickel Belt News, v.41
No. 38A, p. 1-3.

Pearse, G. 1964: Geology of the Pemichigamau Lake Area, 64B/6 (East Half); Publication 61-3;
Manitoba Mines Branch.

Sherritt Gordon Mines Limited 1977: Annual Report 1977; Sherritt Gordon Mines Limited.

Sherritt Gordon Mines Limited 1979: Annual Report

Sherritt Gordon Mines Limited 1981: Annual Report 1981, Sherritt Gordon Mines Limited.

Sherritt Gordon Mines Limited 1983: Annual Report 1983, Sherritt Gordon Mines Limited.

Steeves, M.A. and Lamb, C.F. 1972: Geology of the Issett-Opachuanau-Pemichigamau-Earp
Lakes Area; Publication 71-2F; Manitoba Mines Branch.

Thomas, D.C. 1971: Sherritt Gordon Mines Limited: a Big Stake in Manitoba; Western Miner, vol. 44, No. 5, p. 30.34.
MAP REFERENCES
Manitoba Industry Trades and Mines 2002: Map 64B Uhman Lake, Manitoba Industry Trades and
Mines, Mineral Disposition and Quarry Lease Compilation, scale 1:250 000.

Manitoba Mineral Resources Division: Maps, NE5, 64B, “Circa 1976”, Claim Map Series; Mining
Recording, Mineral Resources Division, claim map, scale 1:31 680.

Manitoba Mines Branch and Geological Survey of Canada: Map 2388G Pemichigamau Lake;
Manitoba Mines Branch and Geological Survey of Canada, aeromagnetic map, scale 1:63 360.

Pearse, G. 1964: Map 61-3 Pemichigamau Lake Area (East Half); 1:63 360 scale, geological map
accompanying; Manitoba Mines Branch, Publication 61-3.

Steeves, M.A. and Lamb, C.F. 1972: Map 71-2-6 Pemichigamau Lake; 1:50 000 scale,
geological map, accompanies Manitoba Mines Branch, Publication 71-2F.

Surveys & Mapping Branch 1985: Map 64A-5 Pemichigamau Lake; Surveys & Mapping
Branch, Ottawa, topographic map (3rd Edition), scale 1:50 000
URL
N/A
Images
Images/0595-1
REMARKS
N/A
NOTES
Revised 03-03
Compiled/Revised by:
GRJ; JJ
Date
06-72 02.73 09-76; 05-02