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Origin of clay
Classification of clays
Constitution of clays
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A.Por argillites basalt beds Best firing range brown structural wares Brown-buff brown-red buff-colored Class of ware coal Color Condition L.S.%d.l. common brick Cone Color Condition Cone fusion County cracks Creek deposits dry length Linear dry length Pore dry properties Sample dry volume Linear dry volume Shrinkage Eocene exposed fire clay Fired properties Sample glacial clays gravel Hammer Bluff hard high shrinkage kaolin kiln Latah length Dry condition length Fired properties length Linear shrinkage length Pore water Light buff light-gray Metaline Falls miles mined overburden Palouse clay plant Plastic and dry Plasticity Good Shrinkage Plasticity Good Volume Pleistocene pottery quartz red and brown refractory residual clay River rock S.H. Remarks sand sandstone sandy sediments shale silt soft Spokane Spokane County Stevens County strata terra cotta texture valley Vitreous vitrification volume Linear shrinkage volume Shrinkage water Washington Water of plasticity wet length Dry Whitman County