Stull ray thomas 1875 19 (1 Ergebnisse)

orig.wrappers Minor rubbing. Rubberstamp to cover. VG. Folding diagram 23x14cm, v,72 pp, Series: U.S. Department of Commerce, Bureau of Mines, Bulliten 252. Includes textual tables, photos, diagrams + a folding diagram. Contents. Economic Geology of Georgia Clays: Origin of Sedimentary Kaolins; Formation of Bauxite; Proposed Classification of Clays; Occurence of & Differences Between Clays; Areas & Operators; Sources & Descriptions of Clays Tested; Washing Tests: English & American Clays; Separation of Coarse Grit; Separation of the Finer Grit; Tests with a Semicommercial Washing Plant; Suggested Commercial Plant; Deflocculation of Clay; Results of Washing; Dewatering; Chemical & Microscopic Analyses of the Separates; Laboratory Tests of Georgia Clays; Utilization of Sedimentary Kaolins of Georgia in White Ware: Utilization of Georgia Clays in Refractories; Utilization of Georgia Clays in Face Brick. Minor rubbing. Rubberstamp to cover. VG. …