Project Gutenberg 2020-12-17 Public domain in the USA. 242 Lumb, Arthur Douglas 1938 Lumb, A. D. (Arthur Douglas) The platinum metals Richard Tonsing and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) "The Platinum Metals" by Arthur Douglas Lumb is a scientific publication written in the early 20th century. This monograph focuses on the occurrences, characteristics, and uses of the platinum metals, providing insights into their extraction and significance, especially within the context of the British Empire and beyond. It aims to describe the sources of these metals and their commercial applications, likely informed by the rising demand and strategic importance of platinum following the disruptions caused by World War I. The opening of the text introduces the reader to the Imperial Institute and its series of monographs on mineral resources. Lumb sets the stage for an in-depth investigation of the platinum group metals—platinum, palladium, iridium, osmium, ruthenium, and rhodium—highlighting their natural occurrences and production lineage. The narrative also addresses historical shifts in global production, particularly the effects of the war on resource availability, mainly focusing on findings from Russia and Colombia. The opening lays the groundwork for a deeper exploration of the methods used for the extraction and refinement of these minerals and their emerging uses in various industrial applications. (This is an automatically generated summary.) Reading ease score: 63.9 (8th & 9th grade). Neither easy nor difficult to read. en Platinum group TN Text Category: History - Modern (1750+) Category: Science - Chemistry/Biochemistry Category: Engineering & Technology 245083 2025-09-25T09:56:25.646472 text/html 223186 2024-10-18T09:08:44 text/html 631609 2025-09-25T09:56:32.571481 application/epub+zip 631485 2025-09-25T09:56:27.257484 application/epub+zip 130426 2025-09-25T09:56:26.409508 application/epub+zip 708680 2025-09-25T09:56:36.250413 application/x-mobipocket-ebook 695430 2025-09-25T09:56:31.858449 application/x-mobipocket-ebook 204988 2022-09-28T20:57:02.248174 application/x-mobipocket-ebook 177314 2025-09-25T09:56:24.700468 text/plain; charset=us-ascii 157437 2024-10-18T09:08:44 text/plain; charset=us-ascii 16170 2025-09-25T09:56:36.399413 application/rdf+xml 16447 2025-09-25T09:56:26.533474 image/jpeg 2404 2025-09-25T09:56:26.470456 image/jpeg 610479 2025-09-25T09:56:25.671538 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog