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Project Manager

Cindy Nagel, Archaeologist

Cindy Nagel has served as the Project Manager at Tallgrass Archaeology since 2022. She was previously a Project Archaeologist at Tallgrass Archaeology between 2008 and 2022. In her role as Project Manager, Cindy interfaces with clients, schedules fieldwork, manages invoicing and billing, and assists with report writing and editing. In her prior role as Project Archaeologist, she participated in all levels of investigations and completed project proposals, site analyses, site evaluations, and project reports. Cindy completed her B.A at the University of Iowa (1997) and her M.A. is in progress at St. Cloud University.

Principal Investigators

Justin Moe, Archaeologist

Justin Moe has been an Archaeological Principal Investigator at Tallgrass Archaeology since 2022. He has over 15 years of archaeological experience investigating prehistoric sites dating to the Paleoindian through the Proto-Historic periods and historic sites dating to the Nineteenth Century through the early-Twentieth Century. He specializes in lithic analysis and geomorphology. Justin directs archival and field research activities related to the identification and evaluation of prehistoric and historic archaeological resources, including completing background research, designing and conducting archaeological surveys and site excavations, analyzing prehistoric and historic artifacts, and preparing technical reports. He is well versed in the Section 106 process, having completed well over 250 cultural resource projects and has been involved in the consultation between client, SHPO, and responsible federal agencies. Justin received his B.A. in Archaeology from the University of Wisconsin La-Crosse (2006) and his M.A from the University of Oklahoma (2010). 


James McGrath-Seegmiller, Archaeologist

James McGrath-Seegmiller joined Tallgrass Archaeology as an Archaeological Principal Investigator in 2022. James has over a decade of field experience in Iowa and abroad. He specializes in the archaeology of prehistoric hunter-gatherers, prehistoric symbolic technologies, rock shelter archaeology, and GIS. James directs field, lab, and archival research for Phase IA, Phase I, Phase II, and Phase III projects. He supervises the GIS analyses, geospatial technologies, and GPS data collection at Tallgrass. James’ dissertation was funded by the National Science Foundation and his work has been published in the Journal of Archaeological Science, Archaeometry, SAA Advances in Archaeological Practice, the South African Archaeological Bulletin, and a book chapter. James received his Ph.D. in Anthropology from the University of Iowa (2020), his M.A. from the University of Iowa (2016), and his B.A. from Arizona State University (2013).


Jacque Dinnes, Archaeologist/Laboratory Manager

Jacque Dinnes has been a Principal Investigator and the Laboratory Manager at Tallgrass Archaeology since 2022. As a Principal Investigator, her responsibilities include leading archaeological investigations, authoring technical reports, and conducting research. As the Laboratory Manager, Jacque oversees the processing, organization, and curation of all archaeological collections recovered during Tallgrass’s field investigations. Her research interests include historic archaeology, legacy artifact collections, bioarchaeology, paleopathology, and feminist archaeology. She has professional experience conducting archaeological survey and excavation in Iowa, Minnesota, and Wisconsin. Jacque has a B.A. degree in Anthropology from the University of Northern Iowa (2015) and a M.A. degree in Anthropology from North Carolina State University (2017).

Ray Werner, Architectural Historian

Ray Werner is the Architectural History Principal Investigator at Tallgrass Archaeology. He initially joined Tallgrass (then Tallgrass Historians) in 2009 as an archaeological field technician. From January 2013 through April 2018, Ray served as curator and assistant director of the Galena-Jo Daviess County Historical Society & Museum in Galena, Illinois. He rejoined Tallgrass Archaeology as a part-time research associate in 2017 before moving to full-time as a project historian in 2018 and principal investigator in 2022. Ray directs archival and field research, authors technical reports for a range of data collection and mitigation projects, and generates National Register of Historic Places nominations. He has conducted surveys for local historic preservation commissions and has presented research at the annual Preserve Iowa Summit. Ray earned his B.A. degree from Loras College (2011) and his M.A. degree in History from the University of Northern Iowa (2015).

In Memoriam

Leah D. Rogers (1956 - 2022)

Leah joined Tallgrass in 2001. She became the owner of the firm, then renamed Tallgrass Archaeology LLC, on January 1, 2017. Leah held an M.A. in Anthropology and had more than 30 years of experience as a Principal Investigator in archaeology, architectural history, and history projects. She completed nearly 100 National Register of Historic Places nominations including: individual buildings and archaeological sites; residential, commercial, rural, and landscape historic districts; and multiple property submissions for architectural and archaeological properties. Leah's name appears on over 240 reports in the National Archaeological Database. She was awarded the 2022 Petersen-Harlan Lifetime Achievement Award from the State Historical Society of Iowa for her contributions to Iowa history.

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