The Great Lakes: The Vessels That Plough Them: Their Owners, Their Sailors, and Their Cargoes, Together with a Brief History of Our Inland SeasCurwood, James Oliver
History
The Great Lakes: The Vessels That Plough Them: Their Owners, Their Sailors, and Their Cargoes, Together with a Brief History of Our Inland Seas
Curwood, James Oliver
Great Lakes (North America); Inland navigation -- United States; Shipping -- Great Lakes (North America)
Down into these pits and along their edges run the tracks of the ore
cars. There is here but little of the shovelling and “picking” of men.
Steam shovels, weighing from sixty to seventy-five tons each, do the
work. Like a great hand one of these shovels dips down into the soft
mass of ore, buries its great dipper until it holds from four to eight
tons, and then, groaning and rumbling, slowly lifts its burden aloft,
swings it over a car, and the actual work of mining is done. A thousand
times a day it will repeat this operation, lifting from three thousand
to eight thousand tons of ore. This one shovel keeps busy three
locomotives and as many trains of dump cars. And there are nearly two
hundred of these shovels in use on the Mesaba range alone. It costs
only about six cents a ton to mine in this way, after the “stripping”
has been done, or, in other words, after the ore has been laid bare.
There are two other processes on the ranges where the ore is not so
soft or so closely laid. One of these is the milling process, and the
other is the blasting out of hard ore. Milling costs about thirty-five
cents per ton, and the blasting process from one dollar to one dollar
and twenty-five cents.
Why it has for some time been impossible to build ships too fast
for the demand may most graphically be shown, perhaps, by quoting
a few figures which demonstrate the tremendous energy now being
exerted in the ore regions of the North. Figures as a usual thing are
uninteresting, but these enter so vitally into the welfare of every
American citizen that they should be regarded with more than ordinary
respect. As stated before, we are now making nearly half of all the
iron and steel produced on earth. In 1880, we made only 1,240,000 tons
of steel; in 1890, this had increased to over 4,000,000; in 1900, to
10,188,000 tons, and in 1905, to 20,023,000 tons. Lake ships and Lake
mines had to supply this. And now we come to mine figures which almost
stagger belief. In 1904, the Mesaba range, for instance, yielded only a
little over 12,000,000 tons. In the following year the production was
nearly doubled, the ore carriers bringing down 20,153,699 tons, which
in 1906 was increased to almost 24,000,000!
This enormous annual tonnage of the Mesaba range, together with that
of the other four ranges of the Superior region, is carried by rail
directly from the mines to the great ore docks of Lake ports. The
product of the Mesaba and Vermilion ranges, in Minnesota, is shipped
from Duluth and Two Harbors; the eight million tons of the Goebic and
Marquette ranges, in Michigan, from Escanaba and Marquette; and the
five million tons of the Menominee range, in Wisconsin, from Ashland
and Superior.
Public-domain text, read in full here on John Shaqi.
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