Nigeria and its tin fieldsCalvert, Albert Frederick
History
Nigeria and its tin fields
Calvert, Albert Frederick
Tin mines and mining -- Nigeria
wash; (2) sampling and inspection of native working and their tailings;
(3) the fact that this proposition is geographically a part of Juga on
which rich wash exists; (4) personal knowledge of the ground tested and
discoveries on every known part of this field, and general occurrence of
cassiterite on all parts of the property. Taking the property as a whole,
he estimates that there are 180 acres of alluvial ground, running 4 lbs.
per cubic yard, averaging two yards deep. In conclusion, Mr. Huddart says
this is an attractive property.... Importance is readily attached to the
fact that the property can be made an immediate producer.
_Juga Property._—This property is on a plateau 3,280 feet above the
sea-level, and Mr. Lush estimates that 200 acres will be highly payable.
He takes the average depth of ground as 9 feet, and this extending for
200 acres equals 2,904,000 cubic yards. The area is of exceedingly high
quality, and exceptionally free from impurities. In his report Mr. Lush
says: “Valuing the ground at 6 lbs. per cubic yard, I am not taking into
account only the high results obtained from some of the bottom wash, but
am reckoning it as a whole. I do this because working results may prove
that the wash does not extend over the whole 200 acres, but the gravel
does, and I feel confident will average what I state.”
_Sub-Juga._—This property, comprising an area of 6,720 acres, lies upon
the lower plateau, or plain, immediately below Juga. The natives have
done a great deal of work here, and their beds were extensively tried
by Mr. Lush, who got very rich prospects when panning. Some of the dish
concentrates went as high as 40 lbs. of tin oxide to the cubic yard,
and in no single instance did he get less than 3 lbs. He considers that
out of the 6,720 acres 400 are proved to be highly payable, but this
only includes the main lead, which runs right through the property for
6¼ miles, and does not include any of the runs coming in from east and
west. He takes the average depth of ground as 9 feet; this extending for
400 acres equals 5,808,000 cubic yards. Mr. Lush has recommended movable
plants for these properties. Transmission of electrical power to run
both the nozzle and the gravel pumps is, of course, the cheapest and
best method of working, but it will be some time, probably two years,
before the contemplated hydraulical scheme can be installed. Mr. Lush’s
recommendations have been accepted by the board, and two plants are
being constructed, and their cost when mounted and erected at the mine
will not exceed £10,000. In addition to the sluice boxes at present
on the property, there are now on the way a further sixty-nine sluice
boxes, with all exhausters complete, and these will enable sluicing and
calabashing to be carried on pending the arrival and erection of the
hydraulic plant.
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account