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fomcthing lefs than Haif a Crown Wages. They 
have different Inventions, in the Mine for fplitting 
the Rock, but the mod effe&ual one is binding it 
with Gunpowder. The whole People employed in 
thefe Mines are about geo. The main Body of the 
Mine is nearly 700 Feet in Diameter, and from this 
go feveral Ead and Wed ; for fo the Mineral runs. 
The broaded of thefe Ways is about two Feet, and 
the Mineral in thclc Veins is richer than what is 
found in the main Body of the Work, whofe greateft 
Depth is 6yo Feet. The Tin-done is fird burnt in 
Kilns, which they fay betters the Tin confiderably, 
and makes it much more cafy to damp. After this 
Preparation it is broughr to the Stamp mills, where 
by damping it becomes like grey River Sand, which 
they walh and feparate the Tin from in the follow- 
ing Manner. They throw it by Shovel's- full into 
Bafons where there paflls a Current of Water, and by 
keeping of it ftirring it runs over by a broad Con- 
duit defeending by Steps, which are covered with 
coarfc Linen C.oth ; and by this Operation the Sand 
is wafhed away, and the Tin remains on the Cloth 
in Form of a black fcaly Powder, and dried is fit for 
Melting. One hundred Weight of the Stone gives 
only three Ounces of Tin ; and 1 yo lb, of the clean- 
wafhed Tin-mineral give 1401b. of Tin. There 
are ten Melting Ovens, each whereof can melt nine 
or ten hundred Weight in twenty-four Hours ; the 
Breadth of thefe Ovens within fide is eight or nine 
Inches, and from ten to twelve Feet long, blown 
by two Pair of Bellows. The Proportion of Char- 
coal to the Metal is near an equal Weight. They 
are thrown into the Oven by Degrees, alternately : 
The 
