AMERICAN CoprER.-The Detroit Advertis
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AMERICAN CoprER.-The Detroit Advertiser
ssrs:-' We are informed by gentleman OF high
Intelligence, connected with the Government
AGENCY, that at the Ontonagon nver IN the VI
cnitv OF the locality of the famous copper rock,
one hundred and twenty seven pits OF shafts have
hcen dug-in all of which, with two exceptions,
,at;ve copper ore has been found At Copper
uarbor. one of the locations of the United States
.rency, several tons OF ore have been obtained
and sent TO this city. The average Of these ores,
ss they came from the bed, has been reduced
here and produced over twenty per cent OF pure
copper. In the ncighborhood other important
discoveries OF copper have been made but not
worked. At Eagle river, twenty miles above
rery rich veins of copper have been discovered,
and are now beng worked At Isle Royale OPP
nos;te Eagle river, fiity-tve miles north Il VEN
has also been found This has been explored by
the Government agent, and several parties of
citizens, and the ores found to be as productive
,s at any point. These are bat few OF the
nonts which have been examined. The com
narson of the ores OF this district with those OF
Cornwall and other mining countries, shows IN
menseIv in favor of the ores of Lake Superior.
The ores analyzed by DR.. Houghton produced
per centagc of pure metal, varying from 80 to
Il -. the averagc stated at II To- The averdyc
produce of the ores of Cornwall, since III, has
never exceeded II per cent of pure metal; and
from h8lS to 1922, only 50 per cent. 1t is b.
proper to add, that examinations of other gentle
men place the per centage of our ores even higher
than the ANALYSIS of DR.. Houghton."