Rockburst: Mechanisms, Monitoring, Warning and Mitigation invites the most relevant researchers and practitioners worldwide to discuss the rock mechanics phenomenon related to increased stress and energy levels in intact rock introduced by drilling, explosion, blasting and other activities. When critical energy levels are reached, rockbursts can occur causing human and material losses in mining and tunneling environments. This book is the most comprehensive information source in English to cover rockbursts. Comprised of four main parts, the book covers in detail the theoretical concepts related to rockbursts, and introduces the current computational modeling techniques and laboratory tests available. The second part is devoted to case studies in mining (coal and metal) and tunneling environments worldwide. The third part covers the most recent advances in measurement and monitoring. Special focus is given to the interpretation of signals and reliability of systems. The following part addresses warning and risk mitigation through the proposition of a single risk assessment index and a comprehensive warning index to portray the stress status of the rock and a successful case study. The final part of the book discusses mitigation including best practices for distressing and efficiently supporting rock. Designed to provide the most comprehensive coverage, the book will provide practicing mining and tunneling engineers the theoretical background needed to better cope with the phenomenon, practical advice from case studies and practical mitigation actions and techniques. Academics in rock mechanics will appreciate this complete reference to rockburst, which features how to analyze stress signals and use computational modeling more efficiently. - Offers understanding of the fundamental theoretical concepts of rockbursts - Explores how to analyze signals from current monitoring systems - Shows how to apply mitigating techniques in current work - Identifies characteristics that should be measured in order to detect rockburst risk

First published in 1983, this book provides a comprehensive view of gold and gold trading in its many facets, and identifies those sources of information that are important for an understanding of the world’s gold markets. The author looks first at gold’s changing role since 1960; in particular, the change from the fixed price to the present free market determination of price. The different forms the demand for gold takes – bullion, paper or in fabricated forms such as jewellery – are explained in detail. This is followed by an analysis of the supply side – new gold production and the circulation of existing old gold. The survey concludes with an assessment of the gold market and of gold prices now and in the future.

Issues for Sept. 1951- include the Bulletin.

Before the advent of the great mineral revolution in the latter half of the 19th century, South Africa was a sleepy colonial backwater whose unpromising landscape was seemingly devoid of any economic potential. Yet lying just beneath the dusty surface of the land lay the richest treasure trove of gold, diamonds, platinum, coal and a host of other metals and minerals that has ever been discovered in one country. It was the discovery and exploitation of first diamonds in 1870 and then gold in 1886 that proved the catalyst to the greatest mineral revolution the world has ever known, which transformed South Africa into the supreme industrialised power on the African continent. Here for the first time is the complete history of South Africa's phenomenal mineral revolution spanning a period of more than 150 years, from its earliest commercial beginnings to the present day, incorporating seven of the major commodities that have been exploited. Digging Deep describes the establishment and unparalleled growth of mining, tracing the history of the industry from its humble beginnings where copper was first mined on a commercial basis in Namaqualand in the Cape Colony in the early 1850s, to the discovery and exploitation of the country's other major mineral commodities. This is also the story of how mining gave rise to modern South Africa and how it compelled the country to develop and progress the way in which it did. It also incorporates the stories of the visionary men - Cecil Rhodes, Alfred Beit, Barney Barnato, Sir Ernest Oppenheimer, Sammy Marks and Hans Merensky - who pioneered and shaped the development of the industry on which modern South Africa was built.