Los Alamos Study Group
Directors and Staff

December 2015

Ray AchesonRay Acheson is the Director of Reaching Critical Will (RCW) and is based in New York City. She monitors and analyzes many UN fora and processes related to disarmament and the arms trade. She is the editor of RCW’s reports, such as the NPT News in Review, First Committee Monitor, and ATT Monitor, and of several publications such as Beyond arms control, Assuring destruction forever, and Costs, risks, and myths of nuclear power. Before joining Reaching Critical Will, Ray worked with the Institute for Defense and Disarmament Studies tracking the manufacture and trade of weapons and writing for the organization’s flagship journal, the Arms Control Reporter. Ray has an Honours BA from the University of Toronto in Peace and Conflict Studies and is pursuing an MA in Politics at the New School for Social Research.


Robert Alvarez is a Senior Scholar at the Institute for Policy Studies (IPS), where he is currently focused on nuclear disarmament, environmental, and energy policies. Robert Alvarez

Between 1993 and 1999, Mr. Alvarez served as a Senior Policy Advisor to the Secretary and Deputy Assistant Secretary for National Security and the Environment. While at DOE, he coordinated the effort to enact nuclear worker compensation legislation. In 1994 and 1995, Bob led teams in North Korea to establish control of nuclear weapons materials. He coordinated nuclear material strategic planning for the department and established the department’s first asset management program. Bob was awarded two Secretarial Gold Medals, the highest awards given by the department.

Prior to joining the DOE, Mr. Alvarez served for five years as a Senior Investigator for the U. S. Senate Committee on Governmental Affairs, chaired by Senator John Glenn, and as one of the Senate’s primary staff experts on the U.S. nuclear weapons program. While serving for Senator Glenn, Bob worked to help establish the environmental cleanup program in the Department of Energy, strengthened the Clean Air Act, uncovered several serious nuclear safety and health problems, improved medical radiation regulations, and created a transition program for communities and workers affected by the closure of nuclear weapons facilities. In 1975 Bob helped found and direct the Environmental Policy Institute (EPI), a respected national public interest organization. He helped enact several federal environmental laws, wrote several influential studies and organized successful political coalitions. He helped organize a successful lawsuit on behalf of the family of Karen Silkwood, a nuclear worker and active union member who was killed under mysterious circumstances in 1974.

Bob Alvarez is an award winning author and has published articles in prominent publications such as Science Magazine, the Bulletin of Atomic Scientists, Technology Review and The Washington Post. He has been featured in television programs such as NOVA and 60 Minutes. 


Lydia Clark

Lydia Clark is a long time resident of Santa Fe, NM, pianist, composer, singer/songwriter, as well as a business administrator and paralegal. She rejoins the board after serving previously from 2004 - 2008, and working with the Study Group as a contractor, then staff member from 2001 - 2002. She participated on the NM Legislative Oversight Committee on Los Alamos National Laboratory, had extensive experience as a staff member in and lobbyist at the New Mexico Legislature, and recently worked with a children’s camp in the Jemez Mountains on climate change. She began her professional music career at the age of 10, receiving classical training from the age of 5 in piano, organ, voice, and flute, and three years at the Santa Fe Conservatory of Music. She has toured through the southwest, Asia and South America performing on stage, in nightclubs, and USO tours. Her work has included the National Dance Institute, School for Performing Arts, the Broadway Theatre Workshop, Santa Fe Opera school programs, Santa Fe High School and Middle School choir and musical theater programs, as well as teaching music, voice, and music theory privately.


Mia Gandenberger is the Programme Manager based in Geneva, for Reaching Critical Will (RCW), the disarmament programme of the Women's International League for Peace and Mia GandenbergerFreedom (WILPF), the oldest women's peace organization in the world. Working with Ray Acheson, she writes and co-authors numerous articles for RCW, as well as layout and design for many of their publications. Mia is an experienced speaker and has traveled all over the world representing RCW and WILPF addressing government and civil society conferences, parliamentary committees, organizations, and workshops on important topics such as: gendered aspects of nuclear disarmament, banning nuclear weapons, the importance of civil society in multilateral negotiations, preventing armed gender-based violence in the Arms Trade Treaty, women’s participation in peace processes, military spending and its effects on international peace and security.

Prior to her current position with RCW, she was a visiting Disarmament Fellow with the Los Alamos Study Group and part-time Researcher for Reaching Critical Will. She is a co-founder of NPT-TV a project of the International Law Campaign, that aimed to bring reports on nuclear disarmament diplomacy to a larger audience. Mia has a BA in Politics and Public Administration from the University of Konstanz, Germany.


Tom LuebbenThomas E. Luebben, formerly with Luebben, Johnson & Barnhouse, has a solo Native American Law practice in Sandia Park, New Mexico. Mr. Luebben has more than 40 years of experience in Federal Indian Law, Environmental and Natural Resources Law, and Native American legal representation. He is also the Director of Litigation for the non-profit Native Lands Institute. Thomas Luebben has represented Native American tribes, organizations and individuals throughout the United States, including Alaska and Hawaii, since 1971, and presently serves as tribal attorney and special counsel for tribes and Native American groups in New Mexico, Arizona, Alaska, California, and Nevada. Mr. Luebben has written texts and taught as an adjunct professor at the University of New Mexico School of Law and as a guest lecturer at the University of Arizona School of Law. Thomas E. Luebben holds a J.D. degree from the New York University School of Law, where he was a Root-Tilden scholar, 1969. He is also a geophysical engineer, with a professional GeoPhysics degree from the Colorado School of Mines, 1966.

Greg Mello

Greg Mello, Executive Director, is a co-founder of the Los Alamos Study Group and has led its varied activities since 1992, including policy research, environmental analysis, congressional education and lobbying, community organizing, litigation (FOIA, civil rights, NEPA), advertising, and the nuts and bolts of funding and running a small nonprofit. From time to time he has served as a consulting analyst, writer, and spokesperson for other nuclear policy organizations. Greg was educated as a systems engineer with a broad scientific background (Harvey Mudd College, 1971, with distinction) and as a regional planner with emphases in environmental planning and regional economics (Harvard, 1975, with distinction, HUD Fellow in Urban Studies). During the early 1980s Greg was a high school science and math teacher, then a hazardous waste inspector and statewide hazardous materials incident commander, and in the late 1980s a supervising hydrogeologist, for the New Mexico Environment Department. In 1984 Greg led the first regulatory enforcement at Los Alamos National Laboratory (LANL). In the early 1990s Greg was a consulting hydrologist in parallel with the early Study Group, with cleanup projects in New Mexico and California. In 2002, Greg was a Visiting Research Fellow at Princeton University’s Program on Science and Global Security. Greg’s research, analysis, and opinions have been published in the New York Times, Washington Post, The Bulletin of the Atomic Scientists, Issues in Science and Technology, in the New Mexico press, and elsewhere. He has been interviewed thousands of times by U.S. and international news media (print, radio, and television). Greg’s research has been the source or impetus of many of these media articles and programs. In addition to speaking at hundreds of public meetings and events in New Mexico, Greg has been a guest speaker at several international disarmament events here and abroad.

Trish Williams-Mello

Trish Williams-Mello, Operations Director, has been on the staff of the Los Alamos Study Group since 2003, in charge of web design and maintenance, communications, administration, and bookkeeping. She moved to New Mexico in the summer of 2000 after taking a job as Director of Admissions and Horsemanship Instructor with Brush Ranch School, a small private boarding school in the mountains north of Pecos, NM. Before her move, Trish worked as the Operations and Development Director for Serious Texans Against Nuclear Dumping (STAND) of Amarillo from 1990-2000. She also co-founded the Panhandle Area Neighbors And Landowners (PANAL), as well as the Pantex Plant Citizens Advisory Board. Trish served as a director on other boards while in Texas -- the Panhandle Water Planning Group, Potter County Farm Bureau as President, and the Texas Feed Grains Advisory Board, while farming and raising her four children on their family farm across the road from the Pantex Nuclear Weapons Facility.