 |
Mechanical Loading For Pittsburgh District Mines,1926
Bulletin 28
Mining And Metallurgical Investigations
Under Auspices of
Carnegie Institute Of Technology, United States Bureau Of Mines, And Metallurgical Advisory Board.
Mechanical Loading For The Coal Mines Of The Pittsburgh District
by H.F.McCullough,Research Engineer, Carnegie Institute Of Technology,
and
J.W.Paul chief of coal-mining investigations,U.S. Bureau of Mines
Carnegie Institute Of Technology,Pittsburgh,Pennsylvania 1926
contents:
Influence of mining methods on mechanical loading.
Reason for failure to control long-face working conditions.
Roof action with mining by long-face caving.
Order of the breaking and caving of overlying strata.
Relations of volume of strata in place and caved material.
and more. Has slight soiling on cover. Overall Very Good Condition!
Item # : 119097
Box # : 6540
Shipping From: Pittsburgh, PA 15219
Shipping Policy: See item description
Payments Accepted via: See Item Description
|
