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Monday, July 27, 2020 | History

3 edition of Anthracite Mechanical-Mining Investigations found in the catalog.

Anthracite Mechanical-Mining Investigations

United States. Bureau of Mines.

Anthracite Mechanical-Mining Investigations

Use of Yielding Steel Supports (Props) in Combination with Backfilling For Mining Thick, Flat Beds.

by United States. Bureau of Mines.

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Published by s.n in S.l .
Written in English


Edition Notes

1

SeriesReport of investigations (United States. Bureau of Mines) -- 5290
ContributionsHartley, J., Cooner, J., Brennan, R.
ID Numbers
Open LibraryOL21746207M

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Full text of "Decimal classification and relativ index for libraries, clippings, notes, etc" See other formats. The present Hạ Long Bay, in fact, appeared after the Middle Holocene maximum transgression, leaving ultimate zone of lateral undercutting in the limestone cliffs bearing many shells of oysters, having the 14C age as to >40, y. BP. Geological resources are abundant: anthracite, lignite, oil shale, petroleum, phosphate, limestone and.

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Anthracite Mechanical-Mining Investigations by United States. Bureau of Mines. Download PDF EPUB FB2

Anthracite mechanical-mining investigations: Use of yielding steel supports (props) in combination with backfilling for mining thick, flat beds [John C. Hartley] on *FREE* shipping on.

Get this from a library. Anthracite mechanical-mining investigations: second testing of Brieden pneumatic packing machine. [Ralph H Whaite; United States. Bureau of Mines.]. @article{osti_, title = {Mining subsidence engineering}, author = {Kratzsch, H.}, abstractNote = {This translation deals with the current state of international knowledge on strata and ground movement over mine workings.

Attention is paid damaging effects on mine shafts and the land surface. Of the literature references in the German edition () only the more important for an. Anthracite mechanical mining investigations: progress report 2: preliminary testing of the Eickhoff shearing machine, model DEK / ([Washington, D.C.]: U.S.

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Anthracite mechanical mining investigations. (Washington, D.C.: U.S. Dept. of the Interior, Bureau of Mines, ), by John W. Buch and Andrew Allan (page images at HathiTrust) Report upon a body of land underlaid with anthracite coal, situated in the valley of the Lackawanna in the counties of Luzerne & Wayne, state of Pennsylvania, in The Rochester and Pittsburgh Coal Company was incorporated as the Rochester and Pittsburgh Coal and Iron Company in in Indiana, PA, by the Adrian Iselin family, Swiss investment bankers from New York City.

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The consistent cooperation of the members of the Advertising Committee File Size: 21MB. Anthracite stripping progress is marked by a sharp rise since 6 5 10 4 c)._ o 0 3 6 ' "P'4: 1 s 2 ° 4 o_ 1 ci 2 o o ; 19 20 October, —COAL AGE 2 6 jY 1`r3 4 & Wallace's first.

AN INVESTIGATION OF THE FRIABILITY OF DIFFERENT COALS I. INTRODUCTION 1. Object and Scope of Investigation.-The friability of coal is a question of great interest both in its scientific aspects and also from a commercial point of view to the coal industry, inasmuch as the inherent friability of a coal has a marked influence on the extent to which it is broken down, or degraded, in the numerous.

According to the conclusions of the Bureau,f the ventilating current-in order to safely dilute the obnoxious carbon monoxide ex- hausted from a gasoline locomotive-should be increased to the extent * Eng. and Min. Jour. Vol.

68, p. t Illinois Coal Mining Investigations. Bul. Mechanical mining increased the amount of refuse mined with coal, and correspondingly increased the need for processing— cleaning, crushing, dust treating, and drying— the product. A ton of coal mined in contained 28 percent more refuse than it did a decade earlier.

At the. Inventory of the archival records of West Canadian Collieries, a coal company which operated mines at Lille, Blairmore, Bellevue and Adanac in the Crowsnest Pass area of Alberta.Coal measures of the Late Jurassic-Early Cretaceous Kootenay Formation are complexly deformed in the southeastern Canadian Rocky Mountains.

The structural style and associated features of the coal measures are in part characteristic of the ‘Foothills Family’ of structures. In addition, by virtue of the major contrast in competency between the coal seams and adjacent strata, the structural Cited by: 1.AP96 AIR POLLUTION ASPECTS OF EMISSION SOURCES: ELECTRIC POWER PRODUCTION- A BIBLIOGRAPHY WITH ABSTRACTS Office of Technical Information and Publications Air Pollution Technical Information Center ENVIRONMENTAL, PROTECTION AGENCY Office of Air Programs Research Triangle Park, North Carolina May For sale by the Superintendent of Documents, U.S.

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