The prevention of accidents from explosives in metal mining / by Edwin Higgins.
|Main Author:||Higgins, Edwin.|
Washington, D.C. : Govt. Print. Off., 1914.
"List of Miners' circulars": p. 16.
On verso of t.-p.: First edition. August, 1914.
At head of title: . . . Department of the interior. Bureau of mines. Joseph A. Holmes, director.
16 p. :
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