From a gated road between
Pandora Creek and Blacksand Creek about 4-5 kilometres before reaching
Zeballos, an old undriveable switch-back road zig-zags up the spur for
5 kilometres to the site of the Zeballos Iron Mine which operated in the
1960's. There are three main crown grants where the magnetite is found:
F.L., Ridge and Cordova, the last two being on the north side of Blacksand
Creek; however, it was the F.L. grant where the majority of both the above-ground
and below-ground mining took place. I am currently unaware of who initially
staked the F.L. claim, but Andy
Morod, a Swiss immigrant who became well-known as an
explorer/prospector in the Zeballos area, had staked some claims on the
Ridge site prior to the 1950's and built a cabin nearby. He accessed the
area by a trail he had to build.
From the
Minister of Mines and Petroleum Resources Annual report ending December
31, 1950:
A detailed
geological examination and dip-needle survey were carried out in 1951
and twelve holes were diamond drilled to aid in outlining the impressive
surface showings of magnetite. In 1952 nine holes were drilled. The
principal showings on Blacksand Creek are reached by a pack-horse trail
from a road along the west bank of the Zeballos River. It consists of
five Crown-granted and two recorded mineral claims leased from the Ford
Iron Syndicate; five Crown-granted claims on which Anyox Metals Limited
holds all rights in iron ore by agreement with Andy Morod,
R.V. Murphy, and others; and one claim held by record by Anvox Metals
Limited.
From the
Minister of Mines and Petroleum Resources Annual report ending December
31, 1960:
In
1959 and 1960 an additional nineteen diamond-drill holes were drilled.
Since June, 1960, the construction of a truck-road from the Zeballos
River road to the main magnetite outcrop at an elevation of 2,500 feet
was almost completed and a right-of-way was cleared for an inclined
surface tram extending from the main outcrop to the mill-site near the
river.
From the
Minister of Mines and Petroleum Resources Annual report ending December
31, 1961:
F.L.
Mines Limited (Zeballos Iron mine) owns seven recorded claims and holds
thirteen Crown-granted claims under lease from Ventures Limited and
eighteen recorded claims under option from various owners, on the west
side of Zeballos River. The claims extend from the river mouth to a
point 3 miles upstream to Blacksand Creek, astride which is an occurrence
of magnetite. In 1961 the number of men employed varied between twenty
and 225, depending upon the amount of construction work being done.
The construction of the crushing plant, surface tramline, beneliciating
plant, tailings disposal, and shiploading facilities was 80 per cent
completed at the end of the year. The designed daily capacity of the
plant is 3,600 tons of mill feed. Surface stripping of the planned pit
area began in December, and 23,000 cubic
yards of overburden was drilled and blasted during that month.
From The Minister of
Mines and Petroleum Resources. Annual report ending December 31, 1962:
The
F.L. deposit is covered by the F.L., F.L. No. 2, F.L. No. 3, F.L. No.
4, Extension No. 2, and Extension No. 4 Crown-granted mineral claims.
The Ridge deposit is covered by the Extension No. 4 and by the Ridge
Fraction recorded claim. The F.L. and Extension claims are owned by
Falconbridge Nickel Mines Limited, and Zeballos Iron Mines Limited was
mining the F.L. deposit under royalty agreement. In 1962 Zeballos Iron
Mines optioned the Churchill group of recorded claims from S. N. Ray
and J. W. Foster, the Ridge Fraction from Andy Morod, of Zeballos, and
the Cordova and Treena recorded claims from H. Sutton, of Zeballos.
The Churchill and Cordova-Treena options were dropped. The F.L., Ridge,
and Cordova magnetite deposits are on the steep north slope of the Zeballos
River valley, and the Churchill lies 2 miles to the north, on the dividing
ridge between the Zeballos and Kaouk Rivers.
The F.L. lies between 2,350 and 2,900 feet elevation, diagonally crossing
the canyon of Blacksand Creek, a tributary of the Zeballos River. The
Ridge deposit is on the upper west slope of the ridge between Blacksand
and Lime Creeks. The Cordova magnetite showings are on the upper Lime
Creek slope, a short distance east of the Ridge. For practical purposes
the F.L. orebody is divided into an A zone south of Blacksand canyon
and a B zone north of it. An open pit has been established on the A
zone, with the main bench at about 2,400 feet elevation. The F.L. open
pit is reached by 5 miles of road from Zeballos to the mill and office
at 400 feet elevation on the north side of the Zeballos River, and by
3 miles of steep switchback road up the ridge between Pandora and Blacksand
Creeks. An extension of this road crosses Blacksand Creek above the
canyon and provides access to diamond sites on the B zone. A foot-trail
crosses the canyon at the 2,400- foot bench and leads to the Ridge deposit.
The Cordova showings may be reached by foot-trail up Lime Creek, but
are now more easily reached by descending from the Ridge.
Ore
from the open pit is trucked down to the crusher at 2,100 feet elevation.
From the crusher it is carried by surface tram down the ridge between
Pandora and Blacksand Creeks to a stockpile at about 800 feet elevation.
From the stockpile it is carried by belt conveyor to the mill, where
it is split into three sizes. The two coarser sizes pass over dry magnetic
separators, the finest over a wet separator. The three concentrates
are combined into a lump concentrate between one-quarter and 3 inches
and conveyed by belt to a stockpile. From the stockpile the concentrate
is hauled in Kenworth tandem trucks to the deep-sea loading-dock in
Zeballos.
Ore
and waste rock were mined concurrently. The A zone dips west at about
45 degrees into the wall of Blacksand Creek canyon, and a large volume
of waste rock has to be removed from the hangingwall. Ore was mined
solely from the main, 2400 level, bench. Several subsidiary benches
were established between 2,470 and 2,750 feet elevation to facilitate
waste removal. In part the waste was bulldozed directly into the canyon
over the north end of the A zone; in part it had to be bull-dozed onto
the 2400 level bench and loaded into trucks for dumping over the outer
edge of the bench. A total of 369,289 tons of ore and 687,000 cubic
yards of waste was mined. The mill started up in April, and produced
250,397 tons of concentrate in 1962. The first ore ship loaded late
in May. On the average, 115 men were employed, and were accommodated
in Zeballos.
Briefly,
the deposits occur along the contact zone between Quatsino limestone
and the Zeballos batholith, where the limestone bulges southwest into
the intrusive. In this part of the area the batholith is not a homogeneous
body, but rather a complex of diorite and variably recrystallized Bonanza
pyroclastics that is further intruded by dykes, stockworks, and irregular
small stocks of light-coloured quartz diorite and granodiorite. Toward
the south end of the F.L. deposit, at the south corner of the bulge,
the limestone is in contact with this complex, but to the north and
east it is separated from the complex by a continuous sheath of Bonanza
pyroclastics. Hoadley termed the bulge a lobate roof pendant preserved
on a cross anticline plunging southwest down the dip of the regional
structure.
The
main F.L. orebody is a nearly planar dyke-like body of nearly massive
magnetite which in part appears to follow the Quatsino-Bonanza contact
on the nose and northwest limb of the bulge. It dips about 45 degrees
west and strikes due north in the A zone and north-northeast in most
of the B zone. Adjacent to Blacksand Creek structure contours on the
hangingwall swing to a northwest strike, reflecting drag on a fault
in the creek that has offset the orebody to the right. The A and the
south part of the B zone are about 100 feet thick; northward the body
tapers to a pinchout.
The
Ridge deposit is a small rectangular plate of almost pure magnetite
lying on limestone close to its east-trending contact with Bonanza tuffs.
It is 300 feet long and 50 feet wide; diamond drilling has shown it
to be shallow, so that it is estimated at 50,000 tons. The only impurities
are a few scattered inclusions of limestone and feldspar porphyry. Skam
is extremely rare in the magnetite, in the limestone, and also in feldspar
porphyry dykes and a body of intrusive andesite along the west part
of the north contact of the magnetite. The tuffs do contain considerable
pyroxene, which may be regarded as a skarn mineral, but they contain
very little epidote and garnet. This pyroxene continues in tuffs near
the limestone contact over the crest of the ridge and down the Lime
Creek slope onto the Cordova claim.
The
Cordova magnetite showing is on the steep west slope of Lime Creek between
2,200 and 2,300 feet elevation, It consists of small lenses of massive
magnetite in heavily pyroxenized tuffs, some 200 feet south of the limestone
contact and just north of and below a small quartz diorite intrusion.
From the
Minister of Mines and Petroleum Resources Annual report ending December
31, 1963.
The
present company commenced work on the property in 1959. Open-pit mining
was begun in 1962, and by the end of that year 250,397 tons of iron
concentrate had been shipped. On February 27, 1963, the property was
closed down. After a complete reorganization of the company and change
of control, the property was reopened on November 1st. It is now intended
to abandon the open-pit operations and prepare for underground mining.
Approximately 70,000 cubic yards of waste was stripped during the year,
and 13 holes were diamond drilled, totaling 2,095 feet. A new bunk-house
camp was being constructed at the end of 1963 to accommodate 60 men.
A crew of 80 men was employed at the beginning of the year and about
15 men after reopening in November.
From the
Minister of Mines and Petroleum Resources Annual report ending December
31, 1964.
After
a complete reorganization of the company and change of control, the
property was reopened on November 1, 1963, and prepared for renewed
production as an underground mine. All underground development work
and production was carried out under contract. A main-haulage adit level
was established at 2,280 feet elevation, and subsequently two further
adit levels were driven at 2,375 and 2,440 feet elevations respectively.
The system of mining is longhole blasting with mucking-machine draw
points.
A limited
amount of open-pit mining was done near the main-adit portal. The first
production under the reorganized company was in July. Total production
of iron concentrates in 1964 was 92,727 tons.
The
ore is trucked from the mine to the primary crusher at 2,100 feet elevation.
It then passes through a secondary crusher and into a 100-ton surge
bin. From there it is drawn in 9-ton steel skips which descend over
standard-gauge triple track surface tram to the crude-ore stockpile
just above the mill. The surface tram-line is 2,500 feet long and extends
from elevation 1,900 feet to the mill horizon of 1,200 feet. At the
mill the ore is beneficiated by magnetic separation. It is then trucked
to a loading dock at the head of Zeballos Inlet, where a stacker conveyor
delivers the ore to a stockpile which may contain up to 80,000 tons.
An underground conveyor system removes ore from the stockpile and loads
directly into the holds of ocean-going freighters. A total crew of 9
men was employed, 52 being employed underground.
From the
Minister of Mines and Petroleum Resources Annual report ending December
31, 1965.
In 1965
the three stopes in the "A" zone were mined, and development
work was carried out in the "B" zone, to the north of "A"
zone. A number of improvements were made to the mine camp. A compressor-house
was erected, a community hall, first-aid, and mine-rescue building was
completed for use in July, and at the end of the year arrangements for
man-haulage on the surface tram were completed. A total crew of 106
men was employed, 43 being employed underground. Total production of
ore trammed to the mill was 364,115 tons. Total iron concentrates produced
in 1965 was 267,823 tons.
From the
Minister of Mines and Petroleum Resources Annual report ending December
31, 1966.
In 1966
the stopes in "A" zone were mined out, leaving only the ribs
and crown pillars. Development work was completed in the "B"
zone, to the north of "A"zone, and two stopes in this zone
were brought into production. A total crew of 100 men was employed,
45 being employed underground. Total production of ore trammed from
the mill was 365,576 tons. Total iron concentrates produced was 323,302
tons.
From the
Minister of Mines and Petroleum Resources Annual report ending December
31, 1967.
In 1967
the development work in "B" zone was completed, and the two
stopes in this zone were mined. By the end of the year the long-hole
blasting in the stopes had broken through to the surface. The ore from
these stopes is loaded out at drawpoints on "B" level at 2,440
feet elevation and put through an ore-pass to the main haulage at 2,280
feet elevation. Total production of ore milled was 372,198 tons. Total
iron concentrate produced was 256,806 tons.
From the
Minister of Mines and Petroleum Resources Annual report ending December
31, 1968:
All
development was completed by the autumn of 1967. In 1968 the three pillars
between the stopes in "A" zone were mined. No. 2 pillar was
blasted in February, No. 3 pillar in May, and No. 1 pillar in August.
The loading out of broken ore was still in progress by year end but
it is expected that the operation will be completed in early 1969.
The
powerhouse was burned to the ground on May 4 and all machinery destroyed.
The origin of the fire is unknown. A new temporary power plant was built
to operate the mill until the mine is worked out, which probably will
be in early 1969.
After 1968
the mine never operated again and nature has began to reclaim the land.
The switch-back road that winds up to the mine site is overgrown with
alder; however, the hangingwall where the underground mining took place
is an amazing site.
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