Agricola, Georgius
,
De re metallica
,
1912/1950
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<
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type
="
main
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<
s
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<
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pagenum
="
150
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hammer. </
s
>
<
s
>The lower end is pointed so as to split the hard rocks and veins
<
lb
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with its point. </
s
>
<
s
>All of these have eyes except the fourth. </
s
>
<
s
>The first,
<
lb
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which is in daily use among miners, is three-quarters of a foot long, a digit
<
lb
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and a half wide, and a digit thick. </
s
>
<
s
>The second is of the same width as the
<
lb
/>
first, and the same thickness, but one and one half feet long, and is used to
<
lb
/>
shatter the hardest veins in such a way that they crack open. </
s
>
<
s
>The third
<
lb
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is the same length as the second, but is a little wider and thicker; with
<
lb
/>
this one they dig the bottoms of those shafts which slowly accumulate water.
<
lb
/>
</
s
>
<
s
>The fourth is nearly three palms and one digit long, two digits thick, and in
<
lb
/>
the upper end it is three digits wide, in the middle it is one palm wide, and
<
lb
/>
at the lower end it is pointed like the others; with this they cut out the
<
lb
/>
harder veins. </
s
>
<
s
>The eye in the first tool is one palm distant from the upper
<
lb
/>
end, in the second and third it is seven digits distant; each swells out
<
lb
/>
around the eye on both sides, and into it they fit a wooden handle, which
<
lb
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they hold with one hand, while they strike the iron tool with a hammer, after
<
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placing it against the rock. </
s
>
<
s
>These tools are made larger or smaller as
<
lb
/>
necessary. </
s
>
<
s
>The smiths, as far as possible, sharpen again all that become dull.</
s
>
</
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>
<
figure
number
="
76
"/>
<
p
type
="
caption
">
<
s
>A—FIRST “IRON TOOL.” B—SECOND. C—THIRD. D—FOURTH.
<
emph
type
="
sup
"/>
2
<
emph.end
type
="
sup
"/>
E—WEDGE. F—IRON
<
lb
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BLOCK. G—IRON PLATE. H—WOODEN HANDLE. I—HANDLE INSERTED IN FIRST TOOL.</
s
>
</
p
>
<
p
type
="
main
">
<
s
>A wedge is usually three palms and two digits long and six digits wide;
<
lb
/>
at the upper end, for a distance of a palm, it is three digits thick, and
<
lb
/>
beyond that point it becomes thinner by degrees, until finally it is quite
<
lb
/>
sharp.</
s
>
</
p
>
</
chap
>
</
body
>
</
text
>
</
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>