In this interview, David Zierler, Oral Historian for AIP, interviews Dan Neumann, Group Leader for Neutron Condensed Matter Science at the NIST Center for Neutron Research. Neumann recounts his childhood growing up on a farm in Nebraska and later on in Arizona. He discusses his undergraduate experience at Arizona State and his developing interest in condensed matter physics. Neumann describes his graduate work at the University of Illinois, and he describes his lab work, his AT&T fellowship and research at Bell Labs, and his dissertation work under the direction of Hartmut Zabel. He explains the circumstances leading to his appointment at NIST, and he describes the value of neutron scattering as a means of understanding materials at atomic, nanoscale levels. Neumann describes how neutron scattering fits within the overall mission of NIST, and he explains NIST's support for basic science and why its laboratories have attracted a wide array of researchers. He explains how neutron scattering is the key to developing new materials for both research and commercial applications. Neumann describes some of the key interagency partnership that have advanced neutron scattering research, and he explains some recent projects he has been involved in, including hydrogen fuel cell research, dynamic work on proteins, and pharmaceutical work. At the end of the interview, Neumann describes how closely his work at NIST has been integrated within the broader physics community.