BOOKQUE

Rock-dusting in Coal Mines of the State of Washington
S. H. Ash , John G. Schoning
· 1930
Flood-prevention Projects at Pennsylvania Anthracite Mines: A Preliminary Study
S. H. Ash , James Westfield
· 1946
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Mine Pumping Plants, Anthracite Region of Pennsylvania, by S. H. Ash, C. S. Hower, D. O. Kennedy and W. H. Lesser
S. H. Ash , C. S. Hower , D. O. Kennedy , W. H. Lesser , Etats-Unis. Mines (Bureau)
· 1953
No image available
Surface-water Seepage Into Anthracite Mines in the Southern Field, Anthracite Region of Pennsylvania, by S. H. Ash, H. B. Link and W. M. Romischer
S. H. Ash , H. B. Link , W. M. Romischer , Etats-Unis. Mines (Bureau)
· 1954
No image available
Surface-water Seepage Into Anthracite Mines in the Wyoming Basin, Northern Field, Anthracite Region of Pennsylvania, by S. H. Ash and R. H. Whaite
R. H. Whaite , S. H. Ash
· 1953
No image available
Surface-water Seepage Into Anthracite Mines in the Western Middle Field, Anthracite Region of Pennsylvania, by S. H. Ash and H. B. Link
S. H. Ash , H. B. Link , Etats-Unis. Mines (Bureau)
· 1953
No image available
Barrier Pillars in the Southern Field, Anthracite Region of Pennsylvania, by S. H. Ash and H. D. Kynor
S. H. Ash , H. D. Kynor , Etats-Unis. Mines (Bureau)
· 1953
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Safety Practices in California Gold Dredging, by S. H. Ash
S. H. Ash
· 1932
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Surface-water Seepage Into Anthracite Mines in the Lackawanna Basin, Northern Field, Anthracite Region of Pennsylvania, by S. H. Ash, W. L. Eaton and R. H. Whaite
R. H. Whaite , S. H. Ash , W. L. Eaton
· 1952
No image available
Acid-mine-drainage Problems, Anthracite Region of Pennsylvania, by S. H. Ash, E. W. Felegy, D. O. Kennedy and P. S. Miller
S. H. Ash , E. W. Felegy , D. O. Kennedy , P. S. Miller , Etats-Unis. Mines (Bureau)
· 1951