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A reprint of the Original US Geological Survey Bulletin 1355. This publication is a catalog of locations, Geology, and production from the placer districts of Arizona. Over 90 Arizona Placer District covered in this publication.
The southwestern deserts stretch from southeastern California to west Texas and then south to central Mexico. The landscape of this region is known as basin and range topography featuring to “sky islands” of forest rising from the desert lowlands which creates a uniquely diverse ecology. The region is further complicated by an international border, where governments have caused difficulties for many animal populations. This book puts a spotlight on individual research projects which are specific examples of work being done in the area and when they are all brought together, to shed a general light of understanding the biological and cultural resources of this vast region so that those same resources can be managed as effectively and efficiently as possible. The intent is to show that collaborative efforts among federal, state agency, university, and private sector researchers working with land managers, provides better science and better management than when scientists and land managers work independently.
In the late 1880s, Pleasant Valley, Arizona, descended into a nightmare of violence, murder, and mayhem. By the time the Pleasant Valley War was over, eighteen men were dead, four were wounded, and one was missing, never to be found. Valley of the Guns explores the reasons for the violence that engulfed the settlement, turning neighbors, families, and friends against one another. While popular historians and novelists have long been captivated by the story, the Pleasant Valley War has more recently attracted the attention of scholars interested in examining the underlying causes of western violence. In this book, author Eduardo Obregón Pagán explores how geography and demographics aligned to create an unstable settlement subject to the constant threat of Apache raids. The fear of surprise attack by day and the theft of livestock by night prompted settlers to shape their lives around the expectation of sudden violence. As the forces of progress strained natural resources, conflict grew between local ranchers and cowboys hired by ranching corporations. Mixed-race property owners found themselves fighting white cowboys to keep their land. In addition, territorial law enforcement officers were outsiders to the community and approached every suspect fully armed and ready to shoot. The combination of unrelenting danger, its accompanying stress, and an abundance of firearms proved deadly. Drawing from history, geography, cultural studies, and trauma studies, Pagán uses the story of Pleasant Valley to demonstrate a new way of looking at the settlement of the West. Writing in a vivid narrative style and employing rigorous scholarship, he creatively explores the role of trauma in shaping the lives and decisions of the settlers in Pleasant Valley and offers new insight into the difficulties of survival in an isolated frontier community.
This report describes a new set of standard fire behavior fuel models for use with Rothermels surface fire spread model and the relationship of the new set to the original set of 13 fire behavior fuel models. To assist with transition to using the new fuel models, a fuel model selection guide, fuel model crosswalk, and set of fuel model photos are provided.