Mining in the western United States entered its great era after 1860 through use of the double-jack, black powder, hand steel, Bickford fuse, wire rope, and the steam engine. Those were the years of bonanza strikes: Henry Wickenburg's Vulture Mine in Arizona Territory; the main hard-rock gold strike in the desert Southwest; Ed Schieffelin's discovery of vast silver deposits in Tombstone, Arizona; and the Tonopah-Goldfield strike in Nevada, which netted over one hundred million dollars. Black Powder and Hand Steel describes the miners and the machinery they used. Otis E. Young, Jr., gives an account of the miners, particularly the Cornish and Irish, their origins, character, social life, pleasures, and, most important, their labors. The miner's lot depended on the tools he used, and the author traces the evolution of the miner's most important tools: from hoisting bucket to mine elevator, cold mining to dynamite, ore car to skip, hemp to wire rope, and slow match to Bickford fuse. Young reveals the difficulties of prospecting and mining two of the West's most valuable ores, gold and silver, and gives readers a firsthand look at the challenges of working even the most successful strikes. A companion volume to Young's Western Mining, Black Powder and Hand Steel is written in the same lively style - informative and entertaining for general readers and scholars. It is also well illustrated, with drawings by Buck O'Donnell.

This book delivers a comprehensive and up-to-date treatment of practical applications of metamaterials, structured media, and conventional porous materials. With increasing levels of urbanization, a growing demand for motorized transport, and inefficient urban planning, environmental noise exposure is rapidly becoming a pressing societal and health concern. Phononic and sonic crystals, acoustic metamaterials, and metasurfaces can revolutionize noise and vibration control and, in many cases, replace traditional porous materials for these applications. In this collection of contributed chapters, a group of international researchers reviews the essentials of acoustic wave propagation in metamaterials and porous absorbers with viscothermal losses, as well as the most recent advances in the design of acoustic metamaterial absorbers. The book features a detailed theoretical introduction describing commonly used modelling techniques such as plane wave expansion, multiple scattering theory, and the transfer matrix method. The following chapters give a detailed consideration of acoustic wave propagation in viscothermal fluids and porous media, and the extension of this theory to non-local models for fluid saturated metamaterials, along with a description of the relevant numerical methods. Finally, the book reviews a range of practical industrial applications, making it especially attractive as a white book targeted at the building, automotive, and aeronautic industries.

Technological advancements are often regarded as positive, as they are usually expected to make life and business easier. While this can often be the case, it is not always true, and much of the improvement in the realm of technology comes from analysis of new technologies for effectiveness. Technology Management in Organizational and Societal Contexts is a critical scholarly publication that explores the relationship between businesses and institutions and technology and analyzes the outcomes in order to promote improvement. Featuring coverage on a wide range of topics, such as e-services, multimedia in education, and issues of emerging technologies, this publication is geared towards academicians, researchers, and students seeking relevant and current research on the interactions between organizations and technology.

The design processes behind a giant leap for mankind. Neil Armstrong in a space suit on the moon remains an iconic representation of America's technological ingenuity. Few know that the Model A-7L pressure suit worn by the Apollo 11 astronauts, and the Model A-7LB that replaced it in 1971, originated at ILC Industries (now ILC Dover, LP), an obscure Delaware industrial firm.Longtime ILC space suit test engineer Bill Ayrey draws on original files and photographs to tell the dramatic story of the company's role in the Apollo Program. Though respected for its early designs, ILC failed to win NASA's faith. When the government called for new suit concepts in 1965, ILC had to plead for consideration before NASA gave it a mere six weeks to come up with a radically different design. ILC not only met the deadline but won the contract. That underdog success led to its greatest challenge: winning a race against time to create a suit that would determine the success or failure of the Apollo missions-and life or death for the astronauts. A fascinating behind-the-scenes history of a vital component of the space program, Lunar Outfitters goes inside the suit that made it possible for human beings to set foot on the Moon.

This book introduces sonar system and acoustic channel model, average energy channel, coherent multipath channel, the theoretical basis for the stochastic time-varying space-variant channel, slowly time-varying coherent multipath channel, and reverberation channel. Based on the basic theory of underwater acoustic channels and the various characteristics of the marine acoustic environment factor, this textbook aims to help students understand the impact of the marine acoustic channel on the sonar system. It helps students to grasp underwater acoustic signal processing principles and obtain the ability to solve practical problems in underwater acoustic channel engineering. Finally, it aims at laying a foundation for the further sonar system design. This textbook is recommended for graduate or undergraduate students in the field of sonar signal processing, underwater acoustic engineering, as well as some related subjects of marine technology.