After completing graduate work in volcano seismology, Timothy L. Karpin worked as a geologist, geophysicist, and hazardous waste specialist for 15 years in the environmental consulting industry. During that tenure, he investigated close to a thousand different industrial and commercial facilities around the nation, developing and honing his skills in producing industrial histories for private and government clients. His extensive environmental training work resulted in his Introductory Career Guide To Environmental Consulting handbook. He has published in The Professional Geologist, focusing on professional ethics, and in the Bulletin of the Atomic Scientists, e.g., the first reporting of an unknown malware that had successfully attacked the email system of the Los Alamos National Laboratory. For 6 years, he traveled throughout the country in search of hidden and obscure nuclear weapons-related facilities – taking time in 2000 to assist USA Today with its three-part landmark series on injured and forgotten Cold War nuclear weapons workers. In 2018, Mr. Karpin appeared as a guest scientist in the Netflix series Bill Nye Saves the World (2nd season, 5th episode). He also has published in Aviation History Magazine on nuclear weapons related topics and consulted for the same magazine on Apollo Program-related technical issues. A native New Yorker, he now lives in Northern California.

      For the past 35 years, James M. Maroncelli has applied his multi-disciplinary scientific and technical background to help private industries and government agencies all across the United States identify and cope with environmental contamination. He developed his investigative skills during this period through interviews of people either unwilling or unable to explain the whole story, or who intentionally provided misleading or incorrect information. He is an experienced technical writer, having published several professional papers, including in the Bulletin of the Atomic Scientists, e.g., the first reporting of an unknown malware that had successfully attacked the email system of the Los Alamos National Laboratory. During his 6 years travelling the country to document retired and active nuclear weapons facilities, he assisted USA Today with its series on injured and forgotten workers of the private sector nuclear weapons industry. In 2018, Mr. Maroncelli appeared as a guest scientist in the Netflix series Bill Nye Saves the World (Season 2, Episode 5 – “Extinction”). His early interest in the construction and testing of nuclear weapons and his consulting work at the Savannah River Plant and the Oak Ridge Reservation while they were still in full-scale production grew into a strong commitment to pull together a coherent picture of the nuclear weapons complex. Having grown up in Chicago, he has also resided in Connecticut, Georgia, and California, but now calls Washington State his home.