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[Assembly 
the mine, it lays on the side of a mountain. The ore, in different places 
where opened, is from 10 to 20 feet thick, inclining at an average angle 
of 30°. The floor is smooth granitic rock, a little over three feet thick; 
rests on another bed of soft rich ore, and the little used proves free of 
sulphur. (I may add from my own knowledge 'positively^ that another 
immense bed underlays the last mentioned. — Wm, Horton.) Sterling 
mine covers a surface of more than 30 acres, by survey; part of this the 
ore is bare, part is covered by soil from one to five feet in depth, and 
part by rock, from six inches to a yard, or more, in thickness. 
Lmg mine — discovered in 1761, by David Jones, has never been 
bottomed in any place. It is traced over a mile in length; is wrought 
40 rods in length, general width 16 feet, consisting of two parallel 
layers, with a waving slab of rock between them from 4 to 12 inches 
thick. In this 40 rods a dyke has been found, of what Mr. Townsend 
calls an imperfect flint, 2 feet thick, standing perpendicularly, and cross- 
ing the ore at right angles, (it is now covered.) All the ore similar; 
yield always 62 per cent. Average amount of ore used 600 tons; this 
in 75 years gives 37,500 tons taken from this mine. Its iron is re- 
markably tough clean, and strong; cost of mining from 50 cents to $1 per 
ton. The iron of Long mine has been much used for cannon steel, 
muskets, wire and fine malleable iron. It has also been cast into har- 
ness buckles, and after annealing, proves exceedingly tough and strong. 
Patlersm mine — discovered in 1831 by John Patterson. 1,000 tons 
of this ore are used annually, which in 7 years gives 7,000 tons as the 
amount. Cost of mining from 50 cents to $1 per ton; yields 56 per 
cent. Its ore chiefly used to correct infusible and bad ores, such as 
O'Neil and lean hematite ores. Iron good. 
Red minCj or Spruce swamp mine — discovered in 1780, by J. Stuper- 
fell; cost of mining 50 cents per ton; ore sulphurous; being remote, 
not much used; iron sound; has been generally used as a flux, mixed 
with hard black oxides and refractory cold short ores; it assists fusion, 
and improves the quality of the iron. 
Mountain mine — Discovered in 1758, by a hunter, in consequence of 
a tree being blown up by the roots; yield 45 per cent; iron remarkable 
for strength and fine polish; cost of mining $1 per ton. Two dykes 
cross this mine at an angle of 45°, each 15 inches thick. Before the 
revolution, when this mine was chiefly worked, the iron was sent to 
England to be used for tinning. 
