Full resolution (JPEG) - On this page / på denna sida - Second part - IX. Mining Industry and Metal Production - 1. The Iron Mines (together with information regarding other mines). By the late Prof. O. G. Nordenström - Resources of iron ore in Sweden - Ore raised and exported
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692 IX. MINING INDUSTRY AND METAL PRODUCTION OF SWEDEN.
Finally, we must note the iron percentage of our ores, which, as
known, is generally very high. While the British ores on an average
contain 35 % of iron, the French 36, the German 37, the Austrian a
little above 40, and the Spanish export ores somewhat above 50 s, the
Grängesberg ore reaches as high as from 62 to 63^, the Gellivare ore
from 64 to 65 •/., and finally the ore from Kirunavara and Luossavara up
to 66 In this connection it may be appropriate to observe that
theoretically the percentage of iron cannot exceed 72-5 % in magnetite ores and
70 % in hæmatite ores, however pure they may be. None of the great
industrial countries of Europe can show a counterpart to these Swedish
ores; only in America there has been found equally rich ores, which,
however, on account of their position scarcely can become of any direct
significance to the European market.
Ore raised and exported.
The amount per year of Iron ore raised in Sweden has during the
last decades gained an extent as shown by the following figures:
Average. Metric tons.
1833/40..............................235,000
1841/50..............................270,000
1851/60..............................349,000
1861/65..............................464,363
1866/70..............................553,759
1871/75..............................795,263
1876/80 ..............................726,712
1881/85..............................877,408
1886/90..............................932,470
1891/95..............................1,519,325
1896/00..............................2,294,760
In 1902..............................2,896,616
During 1903 the amount of ore raised has increased very
considerably, owing to the opening of the work in the
Kirunavara-Luossa-vara mines. The total iron ore production in Sweden this year may
have nearly reached 4 million tons. As the world’s total production
of iron ore during the same year may be calculated to nearly 100
million tons, it follows that Sweden’s contribution amounted to about 4ii.
The last mentioned figure does not, however, give us a full idea of the
significance of Sweden in this case, for it must still be borne in mind that the Swedish
ores on an average are richer than those of other countries. In consideration of
the actual iron percentage, the share of Sweden would rather amount to about
41/* % of the world’s production; an exact figure in this respect cannot, however,
be given.
With respect to the iron ore production of other countries, some facte
are given in Tables 98 and 99. From these we find that from 1871/75
to 1900 the share of the British Isles had lowered from 48*2 7 to only
16-14 while that of Germany had risen from 15’7 9 % to 21-4 7, that of
Spain from 1-84 % to 9’82, that of Russia from 2’59 to 7~02 and that
of the United States from 13-eo to 29-82 %■ The share of Sweden was
2*89 $ during 1871/75, and 2-96 % in 1900, but, as it is shown above, in
1903 about 4*.
The total amount of iron ore raised in Sweden was in 1902 distributed
on the different Läns as follows: Norrbotten 45-8 7 ji, Kopparberg 27-47, Örebro
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