CATALOGUE OF SAMPLES OF RAW PRODUCE.
Tray A—MINING- AND MINERAL PRODUCTS.No. 1 to No. 66.
(For Prices of Metal see detailed List accompanying Specimens.')
of the hard kind
below the surface, and are from 24 to 26 inchesin thickness in the bed.
3 Coke made from the above.—This is prepared by burning the Coal in ovens or
in rows on the ground, to purify it from sulphur and other matter whichwould be injurious to the Iron . It is used in the blast or smelting furnaces.
4 Black Bed Coal.—This Coal lies from 40 to 42 yards above the Best or Better
Bed Coal, and the bed is from 34 to 36 inches in thickness. Used for steam-engine boilers and house fires.
5 Coke made from the above.—Used for lime-kilns, stoves for drying cores, for
moulding castings, and other common purposes.
6 Black Ironstone (two specimens).—This lies immediately above the Black Bed
Coal, is found in six distinct strata, and forms a bed of 5 feet in thickness;the whole being embedded in shale. It contains about 28 per cent, metal, or73 cwt. to produce 1 ton of metal.
7 White Ironstone.—This lies 22 yards above the Black Bed Coal, and is found in
seven strata, which compass 7 feet, and is embedded in shale, containing 28per cent, metal, but is not so highly esteemed as the Black Stone.
8 Burnt Ironstone (two specimens).—Prepared by roasting or burning in kilns or
in heaps on the ground, to separate all injurious matter; it is then taken to theblast furnaces to be smelted.
9 Limestone.—This is brought from Skipton , and is used in the furnaces as a flux
for the Ironstone. Requires 22 cwt. for 1 ton of Iron .
10 Pig Iron , best quality, or No. 1.—Used for small or intricate castings, being thesoftest metal.
B