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Doc. 149.] 409
SWEDENBORG TO THE KING .
I therefore venture in all humility to come before you with
some measures, by which the mode of working the mines in
Sweden may be improved, limiting myself for the present to
some improvements in the working of copper. For by care
fully investigating the process used in Sweden , and com
paring it with that employed abroad, taking into consideration
the difference in the ore, I have discovered some means by
which the yield of copper may be considerably increased.
Should your Royal Majesty grant me permission, I am
willing to undertake to get at least eleven skeppund out of
the same amount and the same kind of ore, that which is
found in the Great Copper Mountain near Fahlun, from
which, by the customary process in use in Sweden, only
ten skeppund are obtained at present; which amounts, for all
the mines in Sweden, to ten per cent, and will increase the
yield of copper altogether from 800 to 900 skeppund.
If your Majesty should look with favour on my project, I
am willing to give a proof of it on a large scale ; which may
be done by an equal division being made of the same kind
of ore and coal: and the Royal College of Mines may order
such precautionary measures to be taken that neither party
can have recourse to any unfair means.
In order to put all obstacles out of the way of such a
trial
, I agree, in case my new process should result in any
loss of coal or copper, compared with the yield obtained by
the usual process, to make up at once this loss out of my
own means to the mining authorities. But if, on the other
hand, it is proved that ten per cent has been gained, Your
Royal Majesty will most graciously grant me the first year’s
gains which may thus accrue, extending the same to the whole
yield of copper in Sweden which may have been benefited
by my process ; all of which is to be paid to me by the public,
as soon as the proof has been declared to be satisfactory.
Further, as our Swedish process of smelting copper is
subject to uncertainty as to what may and ought to be
got out of a certain quantity of ore or copper stone;
as in Sweden this depends upon the smelters , the furnace,
and principally, as is maintained , upon luck, and some
times there is only turned out one half, or even less, of
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