Agricola, Georgius, De re metallica, 1912/1950
page |< < of 679 > >|
1Noricians11 collect ore during the winter into sacks made of bristly pigskins,
and
drag them down from the highest mountains, which neither horses,
mules
nor asses can climb.
Strong dogs, that are trained to bear pack
saddles
, carry these sacks when empty into the mountains.
When they
are
filled with ore, bound with thongs, and fastened to a rope, a man,
winding
the rope round his arm or breast, drags them down through the
snow
to a place where horses, mules, or asses bearing pack-saddles can
climb
.
There the ore is removed from the pigskin sacks and put into other
sacks
made of double or triple twilled linen thread, and these placed on the
pack-saddles
of the beasts are borne down to the works where the ores
are
washed or smelted.
If, indeed, the horses, mules, or asses are able
to
climb the mountains, linen sacks filled with ore are placed on their saddles,
and
they carry these down the narrow mountain paths, which are passable
neither
by wagons nor sledges, into the valleys lying below the steeper
portions
of the mountains.
But on the declivity of cliffs which beasts cannot
climb
, are placed long open boxes made of planks, with transverse cleats to
hold
them together; into these boxes is thrown the ore which has been
brought
in wheelbarrows, and when it has run down to the level it is gathered
into
sacks, and the beasts either carry it away on their backs or drag it away
after
it has been thrown into sledges or wagons.
When the drivers bring
ore
down steep mountain slopes they use two-wheeled carts, and they drag
behind
them on the ground the trunks of two trees, for these by their weight
hold
back the heavily-laden carts, which contain ore in their boxes, and check
their
descent, and but for these the driver would often be obliged to
bind
chains to the wheels.
When these men bring down ore from mountains
which
do not have such declivities, they use wagons whose beds are twice
as
long as those of the carts.
The planks of these are so put together that,
when
the ore is unloaded by the drivers, they can be raised and taken apart,
for
they are only held together by bars.
The drivers employed by the owners
of
the ore bring down thirty or sixty wagon-loads, and the master of the
works
marks on a stick the number of loads for each driver.
But some
ore
, especially tin, after being taken from the mines, is divided into eight
parts
, or into nine, if the owners of the mine giveninth parts” to the
owners
of the tunnel.
This is occasionally done by measuring with a bucket,
but
more frequently planks are put together on a spot where, with the
addition
of the level ground as a base, it forms a hollow box.
Each owner
provides
for removing, washing, and smelting that portion which has fallen
to
him. (Illustration p.
170).

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