Sidebilder
PDF
ePub

DEPARTMENT OF COMMERCE --
HERBERT HOOVER, SECRETARY \ 4, jo
|- BUREAU of MINEs "A . . .
Scott TURNER, Director of . . . . .

[ocr errors]
[blocks in formation]
[ocr errors][ocr errors]
[ocr errors]
[graphic]
[ocr errors]

CONTENTS

Individual System------------------------------------------------
The miner's interest in his self-rescuer---------------------------------

IV.145324

Page

25

« ForrigeFortsett »