Silver mining c (12 résultats)

Paperback or Softback. Etat : New. Report of the President and Directors of the Lake Huron Silver and Copper Mining Company [microform]. Book.

Paperback or Softback. Etat : New. The Mountain Pride Gold & Silver Mining Company [microform]. Book.

Taschenbuch. Etat : Neu. Neuware - This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.…

Taschenbuch. Etat : Neu. Neuware - This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.…

PAP. Etat : New. New Book. Shipped from UK. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

PAP. Etat : New. New Book. Shipped from UK. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

Self wrappers. First edition. 7 pp. Sm. 4to. Includes comparison with the Gould & Curry and the Ophir mines. Eberstadt 138: 509. A very good copy, one corner creased, minor wear and soiling to margins.

Etat : New. PRINT ON DEMAND Book; New; Fast Shipping from the UK. No. book.

Etat : New. PRINT ON DEMAND Book; New; Fast Shipping from the UK. No. book.

NEW JERSEY SILVER MINING CO. Engraved stock certificate. Ca. 1866. Unused. In excellent condition. Contains two handsome vignettes of ore mining operations. The New Jersey Silver Mining Company was incorporated in 1866 by J. Harris Cogell, Andrew Dutcher, and Joseph Tucker.

LeatherBound. Etat : New. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. A perfect gift for your loved ones. Reprinted from edition. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set and contains approximately 46 pages. IF YOU WISH TO ORDER PARTICULAR VOLUME OR ALL THE VOLUMES YOU CAN CONTACT US. Resized as per current standards. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Language: English. …

Etat : Good. On offer is an 1876 Metallurgical assay and analysis book of silver mining, only a few years after silver had been discovered at Silver Islet in Northwest, Ontario. The diary's first page has a title: "Analyses & Assays made for the Silver Islet Mining Co. at Silver Islet, Lake Superior 1876 to 77 by Carl O. Wederkinch". The book is true to it's title. Throughout the handwritten book, which covers a period from November 2, 1876 to mid-1877. This book has a tremendous amount of information in it, relating to the complicated and fascinating metallurgical process of Silver mining. Wederkinch, who was at the time the lead engineer of the Silver Islet Mining Co. keeps incredibly detailed and comprehensive notes on a wide variety of topics related to his work at the Silver Islet mine. There are probably over 200 different samples assayed in the book. Silver is assayed through titration, and the calculations are often written out in full. For example: Nov. 2nd. Samples assayed for purposes of finding amount of loss that will occur in concentrating ore. No. 1: Pink spar and slate, some silver sprinkled throughout the spar nearest the slate. Ore taken = 3 A.T. = 87.498 grm. 1/20 A.T. = 34.4 = 694. Concentrations = 7.290 grm. Failings = 72.242grm. Loss = 7.966 grm or 9.1%" This is done many times, with many different types of samples, each taken from different places and described differently. On some dates, a "Diamond-drill-core is used and samples are tested for their silver content. A detailed map can be found about a quarter through the book which gives the locations of all the different samples taken. There are many, many pages where the assay calculations done on the samples are fully fleshed out. These calculations are done by titration and are very complex and incredibly interesting to those who know what is being done. Silver is commonly found in various ores such as argentite, chlorargyrite, and galena (a lead ore often containing significant amounts of silver). Galena is mentioned most often, especially when Wederkinch writes on smelting the ore into silver. The last part of the book, roughly 40 pages, appear to have been written by another person other than Wederkin. They concern a trip to Central America (Ecuador, Panama, Honduras) and what appears to be a feasibility assessment of a number of mines in that part of the world: "Loma Larga Mine. No Frills report says the ore goes averages from $90 to $100 pr. Ton. Mr. Williamson says that the ore will average from $40 to $50 pr. Ton. They have wored as much as 250 tons in a month from 3 mines and he says his ___ at one time showed an average of $50 pr. Ton. He says they had some ___ ore that was sent to England which he thinks will go near $1000 pr. ton but says of late they have not taken out any parking ore for shipment." The date on this section is 1888. Wederkin would die in 1881 in Honduras. Also included are a number of pages on how to calculate latitude and longitude, pages on the use of a smelting furnace to extract base metals from their ore (including the financial details of the use of the furnace, i.e. cost in versus return), pages concerning the details of various metallurgical instruments ("Leffel Water Wheel," "Riveted Iron Pipe," "Smelting Furnace," etc.), pages on the temperatures experienced on a multi-month trip to Honduras to test the feasibility of mining in the country. The book is in fair condition. There is an unattached front cover and no back cover. The pages are in good shape, but are not bound to each other. They are not completely loose, as they are in gatherings of 16 pages or so, but the separate gatherings are not bound to each other anymore. The book is roughly 200 pages, of which there is writing on almost every single page. The handwriting is legible and readable. (Background: Silver Islet refers to both a small rocky island and a small community located at the tip of the Sibley Peninsula in northwestern Ontario, Canada. A rich vein of pure. Manuscript.…