Narrative of the Tenth Annual Meeting. [Volume: 8, Issue: 5, 1889, pp. 274-289]

No. 5.]

CHARCOAL IRON WORKERS.

283

All of these determinations are made when the ore is dried at
212 degrees Fahrenheit.
The present workings are from 130 to 200 feet deep, but the
diamond drill shows ore at 450 feet depth.
Returning to the train, a run of about 23 miles was made to Ely,
(luring which a lunch was served by the courtesy of the Chamber
of Commerce of Duluth, and on arrival at Ely, the Chandler mine
was visited.
The Chandler ore has practically the same general chemical composition, but differs in its physical characteristics from the Vermilion
ore of the Minnesota Iron Company. The Chandler ore seems to
have been crushed into small pieces by some tremendous grinding
process or convulsion of nature.
The company had thus far this season shipped over 250,000
tons of ore; last year it shipped 54,612 tons.
The ore is a high-grade Bessemer, and Col. James Pickands said
that "the vein has been proved for a length of over 1000 feet, a
width of over 200 feet in place, and a depth of 100 feet, showing
at every point of test a high-grade Bessemer ore." Analyses are as
follows: A being a selected sample, B the shipping average of
Chandler ore dried at 212 degrees.
ANALYSES OF CHANDLER ORE.
Metallic Iron. Phosphorus. Silica.
A, 69.00.. 0.018 0.82
B, 66.79..... 0.036 4.07
The uniformity of composition of the Chandler ore is remarkable. We saw analyses of over 40,000 tons of the high-grade ore,
which in no case showed a variation of 1 per cent. in metallic iron,
or over.003 of one per cent. of phosphorus.
The mine was developed as an open pit, and much of the ore
obtained has been won from this opening. Operations are now
also carried on underground, the caving system being adopted.
The mine is leased by the Chicago and Minnesota Ore Company,
on a royalty of 40 cents per ton for the first 100,000 tons, annually mined, and 30 cents for each additional ton. Capt. Joseph
Sellwood, who took nearly 900,000 tons of ore from the Colby
mine, is General Manager, and Capt. John Pengilly is in special
charge of the mine. Two grades of ore are made at the Chandler
mine, viz.: "Chandler" and "Long Lake."