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Showing: 1 to 10 of 1350 matches for "underground auger"  Page   1   2   3   4   5   6   7   8   9  next
TITLE Coal - Experiments with an Underground Auger 
SUMMARY Experiments With an Underground Auger ... This paper deals with a trial operation in
underground auger mining with a machine especially developed for this purpose. ...
AUTHOR Newell, J. P. ; Storey, R. W
PUBLISHED 1953
TITLE Control Of Mountain Bumps In The Pocahontas No. 4 Seam 
SUMMARY ... 3) Loaded pillars can be stress-relieved by drill- ing large-diameter
holes with underground auger units. The pillars remaining ...
AUTHOR Talman, Woods G. ; Schroder, John L., Jr.
PUBLISHED 1958
TITLE Coal - Control of Mountain Bumps in the Pocahontas No. 4 Seam 
SUMMARY ... 3) Loaded pillars can be stress-relieved by drill- ing large-diameter
holes with underground auger units. The pillars remaining ...
AUTHOR Talman, W. G. ; Schroeder, J. L., Jr.
PUBLISHED 1959
TITLE Coal - Primary and Secondary Mining with Auger Equipment 
SUMMARY ... One company in particular, operating in the Cedar Grove seam of West Virginia, is
now in the process of developing areas for their underground auger. ...
AUTHOR Bondurant, D. M.
PUBLISHED 1952
TITLE Index 
SUMMARY ... discussion Consolidation &i"cd:"'(K')'i . & i ; ii ments with an Underground
..... Auger Contact Angles and Surface Coverage. . ...
PUBLISHED 1953
TITLE Directional Sprays Reduce Auger Mining Dust Levels ? Objective 
SUMMARY ... The wet auger spray system was maintained throughout the underground evaluation,
while the auger dearer (the auxiliary system) was switched on and off. ...
PUBLISHED 1989
TITLE A Step Towards Understanding The Behaviour Of Wider Roadways In South African Collieries 
SUMMARY ... them realize this objective. 0; 'of the methods being considered seriously
is underground auger mining. However, the dimension of ...
AUTHOR Quaye, George B.
PUBLISHED 2001
TITLE A Method To Measure Gas Levels During Auger Mining Of Coal 
SUMMARY ... required. Unlike underground mining, the auger mining system fills the
entire cross-s0ctional area of the hole being mined. This ...
AUTHOR Volkwein, Jon C.
PUBLISHED 1994
TITLE Some Aspects Of The Coal Industry Of The U. S. S. R. ? Summary 
SUMMARY ... 1940 1950 1956 Total number of mines.!.! ยท 553 924 1,047
Number of underground mines ..... 546 897 1,002 ...
AUTHOR Markon, George
PUBLISHED 1959
TITLE Contents 
SUMMARY ... 578 Experiments with an Underground Auger . By J .
P . NEWELL and R . W . STOREY ..... 677 ...
PUBLISHED 1953
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