Claudet arthur c (6 risultati)

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Condizione: New. Print on Demand. This book examines the geological features and locations of the six conglomerate beds that make up the majority of gold mines in South Africa. The conglomerates are described in order of their locations from the north, and contain varying distances between them. This descriptive section is followed by a discourse on dislocations and interruptions which have occurred in the mining areas, but also details the methods of extraction that were being employed at the time of its writing. The author particularly emphasizes the high level of the extraction rate, at around 99%, but goes on to describe methods in which the process could be improved, especially by reducing the amount of waste rock sent to mill for processing. Calculations are made to demonstrate the improved results to be obtained from double processing. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Hardcover. Condizione: Very Good. No Jacket. First Edition. Complete. Collection of folded charts and diagrams. Half-leather. The leathered boards and spine are benign. They have some light wear, scuffing, marks. The boards have some shelving wear, some light shelf scuffing. They are steady and assured. The contents are most pleasing condition. Whilst there is evidence of use throughout, the charts etc are healthy, neat, tidy, fresh, clean and clear. fk. Our orders are shipped using tracked courier delivery services.…