Achieving a sustainable, reliable drinking water supply has emerged in recent years as an increasingly important goal, not only in the United States but also worldwide. This is being driven by population growth, increasing water demands, declining groundwater levels, contamination of water sources, greater awareness of adverse environmental impacts, concern regarding the potential impacts of global warming, and many other factors. Among the many methods that are being applied to achieve this goal, managed aquifer recharge is proving to be viable and cost-effective. Recent advances in the science of aquifer recharge, including the geochemistry, microbiology, and hydraulics, provide a strong foundation for the successful implementation of aquifer recharge projects. However, to achieve success, it is necessary to understand the lessons learned, taking advantage of good ideas that worked and not repeating the ideas that did not work. The overall goal of this project was to identify technical variables that result in successful design, operation, and maintenance of sustainable underground storage (SUS) facilities. The key objectives of the project were to increase the available knowledge base of SUS facilities throughout the United States, survey a variety underground storage facilities, identify and evaluate sites where SUS performance failed to meet objectives, address the use of SUS to reduce the vulnerability of water facilities, and create an easy-to-use, practical guidance document and outreach program to distribute research findings. The final report discusses surface and well recharge methods and includes a concise summary of the most important lessons learned from the 22 operating and failed recharge sites that were visited. It also includes a proposed analytical approach that may be applied for water utilities to reduce their vulnerability to service interruption and thereby enhance their system reliability. The appendix includes case studies for the 18 operating and four failed SUS facilities that were visited as part of this project. These are presented on a CD, providing useful perspectives regarding how different water utility systems have approached the need for SUS.

Selected Readings in Mineral Economics reviews the economic principles of mineral investment activities and mining decisions. Topics range from mineral reserves and exploration to the economics of mineral projects, taxation issues, and marketing and finance. This text is comprised of 27 chapters. After explaining the distinction between resources and reserves, this book proposes a concept of mineral reserves. The chapters that follow explore the conversion of resources into reserves through the exploration process, while focusing on the flow from resources to reserves and metal production based on the concept of the ""monitoring curve,"" along with the process of depletion and reserves replacement. The next section illustrates the range of issues associated with rational project evaluation in the minerals sector, considering the discounted cash flow techniques and option pricing as an approach to mine valuation. The effects of Canada's tax system on the mineral supply process are then examined, together with international mineral markets and finance. This text concludes with a chapter that analyzes financing methods for large-scale mining projects, including innovative methods of debt finance involving risk sharing. This book will be of interest to those working in the mining and metallurgical industries.

Earth is poised at the cusp of a 'Great New Age' long predicted in Hopi prophecies. Humanity will now determine whether this New Age will become an age of Enlightenment, or a New Dark Age of One-World-Order dominion.

This fully revised second edition of Electrical Machines is systematically organized as per the logical flow of the topics included in electrical machines courses in universities across India. It is written as a text-cum-guide so that the underlying principles can be readily understood, and is useful to both the novice as well as advanced readers. Emphasis has been laid on physical understanding and pedagogical aspects of the subject. In addition to conventional machines, the book's extensive coverage also includes rigorous treatment of transformers (current, potential and welding transformers), special machines, AC/DC servomotors, linear induction motors, permanent magnet DC motors and application of thyristors in rotating machines.