The Mobridge news. [volume] (Mobridge, Walworth Co., S.D.) 190?-1917, 1910-07-15

field vary in quality from a sub-bitu-
minous to a semi-bituminous, with
some anthracite, and are included in
folded and faulted Tertiary (Eocene?)
shales, sandstones, and some con-
glomerates, a~ggregating 5000 feet in
thickness.
The coal beds vary from 5 to 36
feet in thickness, and the total area
known to be underlain by coal ag.
gregates 4616 square miles. However,
as much of the field is covered by
veyed in detail, the coal bearing area
may be much larger. The total area
of what may prove to be coal bear
ing rocks is approximately 900 square
miles. Up to the present time there
has been no means Of transporting
this coal to market, SO that no mining
has been done, but many beds have
been opened in prospecting.
The anthracite from Matanuska and
Boring rivers has no equivalent on the
Pacific coast, and it compares favor
ably with the Pennsylvania anthra-
cite. 1t ought to be put into the San
Francisco and other Pacific coast mar
kets at a cost far below that of east
ern coal, in which case 1t should have
no difficulty In entirely s~upplanting
the latter.
The Boring river semi-anthracite
and part of the semi bituminous coal
from Matanuska is also better than
anything that is being mined in the
west. These Goals are the equivalent
of the Pocahontas, New River, and
Georges Creek Goals of the east, and
are eminently adapted. for use on war
ships and for other purposes for which
D high grade, pure, "~smokeless" steam
ing coal is required, and for these pur-
poses win command a considerably
higher price than any coal now being
mined on the Pacific coast, or If Of
fered at equal prices, should read
lily drive the latter from the market.
Part of these Goals will produce
an excellent quality of coke-better,
In fact Except possibly in content Of
phosphorus, regarding which no data
are a%vailable), than coke which can
DG DIOuuICd lIOH LII VI bAO w doA-
ington or Vancouver island Goals, and
equal to the coke from Crows Nest
pass. If an important smelter indus
try grows up in Alaska, as now seems
possible, the Alaska coking Goals
should have the advantage, both of
quality and of transportation.
Mining developments in the Bering
river cold fields of the Controller bay
region and in the Matanuska coal
fields of the Cook inlet region have
been practically confined to surveys
for patents, assessment work, and
trail building. The most important
features are connected with the prob
lem of railway construction.
No patents for coal land have vet
been granted.
The value OF these high grade fuels
of Alaska probably exceeds that OF
che gold deposits. and the exploita-
ton OF these coal fields Is OF the great
est Importance TO the entire western
seahoard OF the continent. These Goals
will furnish not only the high grade
steam Goals needed for various indus.
tries. but also the coke for metallur-
gical enterprises. II the iron ores
OF the territory prove valuable. the
west cosst may yet he supplied from
this source with the raw materials
for the manufacture oi iroE and ssssi,
IN AJAX event the copper smelters can
be provided With eose o. Z aigA
The coala ffaR ether known AIasKa
iaaids than these are = situated or
are of suoh quality that they can hnd
lparnetA only whore excessive rates