John Coster-Mullen is a photographer, truck driver, and nuclear archeologist. He has played a crucial role in establishing a public, permanent record of the creation of the bomb, and was featured in “The New Yorker.” In this interview, Coster-Mullen discusses the origins of his project and roadblocks he has encountered along the way, and addresses concerns that his work has revealed classified information. He shares a number of turning point moments and recounts important conversations with Manhattan Project veterans and government officials. He also talks about his time visiting Japan and Tinian Island. Finally, he describes some of the nuclear artifacts he has acquired over the years.