File:Canadian mining journal January-June 1905 (1905) (14595772297).jpg

Identifier: canminingjjanjun1905donm (find matches)
Title: Canadian mining journal January-June 1905
Year: 1905 (1900s)
Authors:
Subjects: Mines and mineral resources
Publisher: (Don Mills, Ont., Southam Business Communications)
Contributing Library: Fisher - 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:
ther place to which therewas access unless the dust,which was very fine, com-bined with oil dropped fromthe pit tub axles, made thecondition more favorable forspontaneous combustion, andwith the enormous weight ofthe roof that had fallen, press-ing upon it, excluding the aircurrent. The stone removed from thewalls amounted in roundnumbers to 25,000 tons, andwas removed from the pit.This does not include aboutan equal quantity which wasremoved from the falls whenreaching the working face, asthis was stowed in the mine.The places where these fallshad taken place were newly-timbered. About 3,000 boomswere put in, besides props,etc., used for lofting. In someplaces where the roof wasvery heavy props were usedin the centre of the boom. No harm was done to theshaft, but around the shaftbottom, as shown on the planby parallel shading, the actionof the heat on the roof madeit necessary to bring it downto a height of two feet, whichgreatly improved the condi-tion of the roads about theplace. ^
Text Appearing After Image:
■4 THE CANADIAN MINING REVIEW. 57 The Mines of Ontario. By W. E. H. Carter, B.A.Sc.*(Concluded.) CORUNDUM MINES.This abrasive mineral was first discovered in Canada in1896, in the township of Carlow, County of Hastings, Ontario,1 and in the two years following received particular attention inthe way of exploration of the area of occurrence by Provincialand Dominion geologists, whose exhaustive reports (12) ap-peared shortly after. No discussion, therefore, need be hereundertaken on the geologic phase of the present situation ofthe industry. The corundum is associated, as a constituent,with igneous rocks embracing the ordinary varieties of sye-nite, syenite pagmatite, nepheline syenite and anorthosite, andis always crystalline and disseminated. Where mined so farthe rock as roughly sorted has contained 10 per cent, or betterof corundum, which is a probable average of the various de-posits now opened up. Further work in the field by privateenterprise has increased the number of known

Note About Images