Nigeria and its tin fieldsCalvert, Albert Frederick
History
Nigeria and its tin fields
Calvert, Albert Frederick
Tin mines and mining -- Nigeria
1,000 acres 2 yards deep at 3 lbs. per cubic yard should yield
about 13,000 tons of Black Tin over about 20 years, which at
£90 per ton represents a profit (taking into account reduced
freight) in excess of £500,000.
_Management._—An arrangement has been made with the Lucky Chance Mines
Limited, for the superintendence of the company’s interests, and for
organising the work under a suitable manager.
The following report by Mr. Walter Wethered, one of the pioneers of the
Northern Nigeria Tin Fields, was made on the original concession, which
comprised an area of six miles along the river, of which this company
have acquired one half.
“This property is situated on the south-eastern side of the Bauchi tin
fields, between the pagan towns of Forum and Rein.
“The area encloses about six miles of a stream flowing in a northerly
direction from Rein to Forum, where it junctions with the system of
rivers on which the Ribon, Bisichi, Doss, and other properties are
situated.
“The area is three-quarters of a mile wide by six miles long, an extent
of four and a half square miles, practically the whole of which is
tin-bearing alluvial. The alluvium is composed of a sandy material of an
extremely free nature, and the bottom is the usual coarse grey granite.
The latter outcrops in very few places, and carries from about a yard to
four yards of alluvial ground. Although the bottom could be reached in
only a few places in the stream bed, good prospects of black tin were
obtained in nearly all samples panned, and from the alluvial flats, as
exposed by the banks of the stream, the results ran from about 3 to 5
lbs. of tin per cubic yard. The panning concentrates contained 10 to 15
per cent. of titaniferous iron sand (which was allowed for), but this
mineral presents no difficulty, and can be easily eliminated by the
ordinary dressing operations.
“The width of the property (three-quarters of a mile) does not include
the whole of the large alluvial flats that occur on either side of the
river, but having secured the river and so much of the adjacent ground,
these flats are protected, and, if necessary, may be taken up when the
land for mining purposes is selected.
“Of the area staked, certainly more than two-thirds carries alluvial
ground of the thickness given above. Except in the bed of the stream, I
would not expect rich patches, but a fairly uniform value throughout.
_Water._—There is a continuous flow of water for sluicing purposes all
the year round.
_Grades._—Cannot be determined without survey, but at the lower (Forum)
end of the property there is sufficient fall to allow the tailings to be
inexpensively dealt with.
_Costs._—Will compare favourably with other mines in the district, _i.e._
with ground of moderate value the costs would amount to between £10 and
£15 per ton of black tin, and present transport charges £27 10s. per ton
inclusive.
Public-domain text, read in full here on John Shaqi.
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