Roy E Gephart's Publications

2007

Boynton PE, RM Bonicalzi, AM Kalet, AM Kleczewski, JK Lingwood, KJ Mckenney, MW Moore, JH Steffen, EC Berg, WD Cross, RD Newman, and RE Gephart. 2007. "Gravitation Physics at BGPL." New Astronomy Reviews 51(3-4):334-340. doi:10.1016/j.newar.2006.11.035 Abstract We report progress on a program of gravitational physics experiments using cryogenic torsion pendula undergoing large-amplitude torsion oscillation. This program includes tests of the gravitational inverse square law and of the weak equivalence principle. Here we describe our ongoing search for inverse-square-law violation at a strength down to 10-5 of standard gravity. The low-vibration environment provided by the Battelle Gravitation Physics Laboratory (BGPL) is uniquely suited to this study.

2003

Gephart RE. 2003. "Hanford: A Conversation About Nuclear Waste and Cleanup" . Battelle Press, Columbus, OH. Abstract In "Hanford: A Conversation about Nuclear Waste and Cleanup", Roy Gephart takes us on a journey through a world of facts, values, conflicts, and choices facing the most complex environmental cleanup project in the United States—the U.S. Department of Energy’s Hanford Site. Starting with the top-secret Manhattan Project, Hanford was used to create tons of plutonium for nuclear weapons. Hundreds of tons of waste remain. In an easy-to-read, illustrated text, Gephart crafts the story of Hanford becoming the world’s first nuclear weapons site to release large amounts of contaminants into the environment. This was at a time when radiation biology was in its infancy, industry practiced unbridled waste dumping, and the public trusted what it was told. The plutonium market stalled with the end of the Cold War. Public accountability and environmental compliance ushered in a new cleanup mission. Today, Hanford is driven by remediation choices whose outcomes remain uncertain. It’s a story whose epilogue will be written by future generations. This book is an information resource, written for the general reader as well as the technically trained person wanting an overview of Hanford and cleanup issues facing the nuclear weapons complex. Each chapter is a topical mini-series. It’s an idea guide that encourages readers to be informed consumers of Hanford news, to recognize that knowledge, high ethical standards, and social values are at the heart of coping with Hanford’s past and charting its future. Hanford history is a window into many environmental conflicts facing our nation; it’s about building upon success and learning from failure. And therein lies a key lesson—when powerful interests are involved, no generation is above pretense. Roy E. Gephart is a geohydrologist and senior program manager at the Pacific Northwest National Laboratory, Richland, Washington. He has 30 years experience in environmental studies and the nuclear waste industry.

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