Clays and Clay Industries of Pennsylvannia: I. Clays of Western Pennsylvania (in Part). Description of the Clays and Clay Industries in the Ohio, Monongahela, Youghiogheny and Conemaugh River Valleys in Pennsylvania, and the Allegheny Valley as Far Up as Kittanning, Including Allegheny, Westmoreland and Fayette Counties and Parts of Beaver, Washington, Greene, Indiana, Armstrong and Cambria Counties
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15 feet Allegheny county Allegheny Valley railroad Alluvium arenaceous Beaver valley Brady's Run brick per day brick yard Brighton Bros burned burnt capacity cent clay and shale clay is obtained Clay Manufacturing clay mined Clearfield county coal bed color common red brick Connellsville daily output deposit dry floor dry pan Elverson Fallston feet thick fire brick fire-clay flint clay furnace Geol glass pots glazed hill inches iron jars kaolin Kittanning clay Layton Lower Kittanning Magnesia material mixed molded Monongahela Monongahela river Office and yard Ohio operated overlain oxide Park Fire Clay paving brick Pennsylvania Railroad Pittsburgh Pittsburgh Clay plastic clay pottery pug mill quantities quarry red and stock Red building brick Reese refractory river sandstone sewer pipe Sherwood shipped silica silica brick soft station stiff-mud stock brick stoneware Surv terrace clay terrace deposit tile Vanport vicinity vitrified western Pennsylvania yellow clay Youghiogheny river