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S. DEPARTMENT OF THE INTERIOR  \nBUREAU OF RECLAMATION  \nMISSION STATEMENTS  \nThe mission of the Department of the Interior is to protect and provide access to our Nation’s natural and cultural heritage and honor our trust responsibilities to tribes.  \nThe mission of the Bureau of Reclamation is to manage, develop, and protect water and related resources in an environmentally and economically sound manner in the interest of the American public.  \nAny use of trade names and trademarks in this publication is for descriptive purposes only and does not constitute endorsement by the Bureau of Reclamation.  \nThe information contained in this report regarding commercial products or firms may not be used for advertising or promotional purposes and is not to be construed as an endorsement of any product or firm by the Bureau of Reclamation.  \nUnited States Government Printing Office  \nDenver: 1998  \nFor sale by the Superintendent of Documents, U. S. Government Printing Office Washington, DC 20402  \nPREFACE  \nPaul Knodel, Chief, Geotechnical Services Branch, Division of Research and Laboratory Services, directed the writing of the Earth Manual, Third Edition, Part 1. Richard Young, Technical Specialist, Geomechanics and Research Section, authored chapter 1. Amster Howard, Technical Specialist, Field Operations Team, wrote chapter 3. I drafted chapter 2, along with sections on drilling, excerpted from the Small Dams Manual originally written by Robert Hatcher, Division of Geology, and on remote sensing, excerpted from the Engineering Geology Manual. H. Kit Fuller of the U. S. Geological Survey, Reston, Virginia updated the information on geologic products available from their agency. The Geology Division (Sam Bartlett, Mark McKeown, and Sandy Kunzer), Construction Division (Pete Aberle), and Embankment Dams Branch (Tom McDaniels) performed Reclamation technical reviews. These technical reviews were essential in improving the quality of the product. Robert T. Sirokman was instrumental in obtaining new photographs of construction from Reclamation Field Offices. Technical editors for this manual were Richard Walters and Lelon A. Lewis.  \nMonica A. Rodriguez and Sharon S. Leffel formatted it.  \nPart 2 contains standard procedures for investigating and testing soil materials for engineering design, construction, and operation and maintenance of water resources structures. Research and development continue to produce improvements in the knowledge of geotechnical materials and methods in which those materials are evaluated. Therefore, readers benefit from the latest technologies.  \nAfter the publication of Part 2 in 1990, efforts began immediately to update Part 1 of the manual. We realized that, with such a broad topic area, we could not afford to go into detail as greatly as we would wish on any one topic. To help alleviate this, a major change to the previous edition is the addition of referenced documents. We have strived to provide the reader the best citations to find further information. We have also referenced other Reclamation documents for more information in the subject areas.  \nThe Bureau of Reclamation has a proud history in the construction of major water resources projects. We have recently broadened our mission to become a water resources management agency. This new direction signals a change from the era of project development. During restructuring in the mid-1990s, the agency witnessed the retirement of hundreds of engineers, technicians, and inspectors. We hope that this manual will stand to document the knowledge gained through the efforts of many of these individuals. The third edition is dedicated to all of those in Reclamation who have participated in these great earthwork endea","cbCaiedhtT8u3rIv","https://ap.wps.com/l/cbCaiedhtT8u3rIv","pdf",5058273,348,"English","# Preface\n## Mission Statements\n## Preface (Third Edition)\n## Preface to the Second Edition","[{\"question\":\"What is the purpose of Earth Manual Part 1?\",\"answer\":\"It provides guidance tied to the Bureau of Reclamation’s mission, focusing on geotechnical knowledge and practical engineering applications. The preface describes how the manual supports engineering design, construction, and ongoing resource structure operation contexts.\"},{\"question\":\"What changes were made compared with the previous edition?\",\"answer\":\"A major change is the addition of referenced documents to help readers find further information, along with efforts to improve citations. The manual also increased in size for readability and to incorporate new material.\"},{\"question\":\"Who contributed to developing the manual?\",\"answer\":\"The preface credits multiple technical specialists for specific chapters, reviewers for technical improvements, photo contributors, and technical editors. It also notes that formatting was done by Monica A. Rodriguez and Sharon S. Leffel.\"}]","Earth Manual - Part 1 - Preface | PDF",1789719163,877]