This historic book may have numerous typos and missing text.
Purchasers can download a free scanned copy of the original book
(without typos) from the publisher. Not indexed. Not illustrated.
1921 Excerpt: ...sand pit at Albany Junction on the Atlantic Coast
Line Railroad 2J4 miles southwest of the Albany court house. The
pit covers several acres, and the exposed face ranges from 15 to 30
feet in height. The sand is pale yellow, composed entirely of
quartz, and is remarkably clean and uniform. Faint stratification
lines dipping from 30 to 40 to the eastward and consisting of
slightly coarser grains in layers i inch thick and with from 2 to 6
inches between the layers, occur in the lower two thirds of the
deposit. Practically no silt or clay is in the sand, although the
clay substratum is exposed in places in the pit floor. The
undulating topography of the sand hill, visible from the top of the
pit banks, consists of small hills reaching a maximum of 40 feel
above the railroad grade with intervening valleys or depressions
where the clay appears to come very close to the surface. Sample
T-210 from this pit has a fineness modulus of 2.04 and 88 per cent
is retained on the 48-mesh sieve. Only a trace of organic matter
occurs. The sand from the pit is used in the manufacture of
sand-lime bricks which are said to compare very favorably with clay
brick in strength and price. The sand from the pit is shoveled into
a tram-car hauled by a small electric locomotive which deposits it
on a bucket elevator by which it is delivered to a bin in the upper
part of the brick plant. The sand is fed from this bin to a short
belt conveyor from which an arbitrarily regulated portion (usually
15 per cent) is removed by a scraper and allowed to pass into a
tube-mill where it is thoroughly ground and mixed up with the
caustic lime which forms the binder. The tube mill is 5 by 22 feet
and made by the Power & Mining Manufacturing Company. The sand
and lime are ground until 90 per cent ...
|Country of origin:
Mining Georgia Dept of Mines
||246 x 189 x 8mm (L x W x T)
||Paperback - Trade
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