A TREATISE

ON

MINE-SURVEYING.

BY

BENNETT H. BROUGH,

ASSOCIATE OF THE ROYAL SCHOOL OF MINES; MEMBER OF COUNCIL OF THE INSTITUTION
OF MINING ENGINEERS; FELLOW OF THE GEOLOGICAL SOCIETY AND OF
THE INSTITUTE OF CHEMISTRY; HONORARY MEMBER OF THE

CANADIAN MINING INSTITUTE; FORMERLY

INSTRUCTOR IN MINE-SURVEYING

AT THE ROYAL SCHOOL

OF MINES.

FIFTEENTH EDITION,

REVISED

BY HARRY DEAN, M.Sc., A.R.S.M.,

LECTURER IN MINING AND SURVEYING IN THE UNIVERSITY OF DURHAM;
FORMERLY EXTERNAL EXAMINER TO THE ROYAL SCHOOL OF MINES
IN MINE-SURVEYING; ASSISTANT EXAMINER TO THE BOARD
OF EDUCATION IN COAL-MINING; EXAMINER TO THE
DURHAM COUNTY COUNCIL IN MINING AND
MINE-SURVEYING.

Reset, With Numerous Diagrams.

LONDON:

CHARLES GRIFFIN & COMPANY, LIMITED;

EXETER STREET, STRAND.

1920.

[All Rights Reserved.]

B8 1920

....

PREFACE TO FIFTEENTH EDITION.

As the Fourteenth Edition of this book was revised throughout and in part re-written, an unusually large number was printed, but these have been quickly sold. Further revision seemed to be unnecessary, since the mining press pronounced the book "a masterly production, practically amounting to a new work." Only a few corrections have, therefore, been made for this edition.