Mechanical loading practice in underground hard-rock mining, comparison with mechanical loading practice in coal mining, and proposed ore mining systems with mechanical loading ...

Author:: Hartman, Howard Levi, Jr.
Published:: [Place of publication not identified] : [publisher not identified], 1947.

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Graduate Program:

Subject(s):

Dissertation Note:

M.S. Pennsylvania State College.

Bibliography Note:

Bibliography: leaves 198-200.

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