Identifier: annualreport191002onta (find matches)
Title: Annual report
Year: 1891 (1890s)
Authors: Ontario. Dept. of Mines
Subjects: Mines and mineral resources
Publisher: Toronto
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
l mines, some hundreds in number, which onceproduced ore in Saxony, and which played such an important part industrially, andalso technically, in the development of the art of mining, concentration and smelting,the cobalt-bismuth-silver mines of to-day are the only ones which are not operated at aloss. REPORT OF 1911 According to this report the richest ore taken out was from a vein of which ap-proximately 800 square metres vein surface were mined. The return for a square metrevein surface was about 22 lbs. metal, of which over 90 per cent, was bismuth. Reducedto our systems the yield was $28 per square yard vein surface. In another mine (Marx Semmler Stolln) radio-active water was found in following alittle cross vein from one of the old workings. In one place water coming at the rateof about two gallons per minute was strongly radio-active. In another place the quantityof water was three times as great as above mentioned with a radio-activity slightly less. 252 Bureau of Mines No. 4
Text Appearing After Image:
1913 Appendix IV 253 APPENDIX IV MINING AND CONCENTRATING METHODS AT COBALT By E. T. Corkill Most important developments have taken place in the Cobalt silver mines sinceihe third edition of this Report was published. The production of silver from thesemines has raised Ontario to the rank of the worlds third largest producer, surpassedonly by Mexico and the United States. Owing to the number of mining companies now concentrating their low-grade ore,it is misleading to compare the tonnage shipped with the shipments of former years.The only fair comparison is the number of ounces shipped. These shipments are givenon another page of this Report. The statistics show that up to December 31st, 1912, 44 mining companies in theCobalt camp have shipped ore. Some of these companies ship from several mines, sothat the total number of mines that have produced ore is in excess of this number.Of these 44 companies, 21 have paid dividends. This includes two mires, privatelyowned, the amount of whose

Note About Images