Nigeria and its tin fieldsCalvert, Albert Frederick
History
Nigeria and its tin fields
Calvert, Albert Frederick
Tin mines and mining -- Nigeria
This company has exclusive prospecting rights over an area of 50 square
miles in the Naraguta district of Northern Nigeria, together with mining
licences over a further area of 12½ acres situated at the head-waters of
a small river.
The manager of this company in Nigeria is Mr. Means, who has done a
considerable amount of prospecting on the property. This large property
of 50 square miles was originally secured by the Anglo-Continental
Company. It is believed there are several large areas of alluvial tin on
the property, which has not yet been properly prospected.
With regard to the smaller concession of 12½ acres, Mr. Lush confirmed
the statement that the alluvial tin at this point was exceptionally rich,
averaging as much as 12 lbs. per cubic yard.
In his report on this property dated February 21, 1910, Mr. Lush said:
“From surface pannings I should estimate the overburden, or rather
stanniferous gravelly deposit overlying the wash, to go 2 lbs. per cubic
yard. It would be interesting to see the values and thickness of the
bottom wash. Provided sufficient power is obtained, there is room here
for at least four big plants capable of treating 10,000 cubic yards of
gravel each per week: 40,000 yards at 2 lbs. equals 80,000 lbs. of tin
oxide, equal to 35 tons per week.
“I look for a fair depth of payable ground, everything points to its
being so, but only boring can decide this.
“Life of property would largely depend on the depth of the deposit and
the number of plants erected, but presuming the deposit is 15 feet deep,
and you instal four plants capable of putting through 10,000 yards weekly
each, it would take fully eight years to work out this 500 acres of the
property.
“I understand that the total area of land taken over by you from the
Niger Bauchi Syndicate is 50 square miles, or 32,000 acres. In this
report I am only dealing with the southern and south-western part of your
holding, some 20 square miles, as I did not visit the northern portion. I
was, however, credibly informed by one of the Government mining officials
that on the northern block of 30 square miles there are also stanniferous
deposits, and in addition a very promising tin lode, a continuation of
the one that has been opened up by the Niger Company on your eastern
boundary. The actual value and life of only the area I have reported
upon would, in my opinion, quite justify your proceeding with vigorous
development work at once. The probable values of the remaining 30 square
miles may possibly turn out equal to the southern; there is no reason why
they should not, as the whole of the property is within a rich alluvial
and lode tin district that has hardly as yet been scratched.”
On June 15 the company’s representative in Nigeria cabled: “Active
sluicing operations will be commenced as soon as sufficient water
is available. Meantime 6 tons of tin have been produced by means of
calabashes.”
Public-domain text, read in full here on John Shaqi.
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