Starting in 1973, excavation was conducted at the Kraku'lu Yordan site, a metallurgical complex in NE Serbia, Yugoslavia. Artifactual data indicate the site was in use primarily during the 4th century A.C., a period of Roman imperialism and colonialism within this province of Upper Moesia. This report describes three Yugoslav trial excavation seasons of 1973--75 and the beginning of joint Yugoslav-United States research in 1976. Architectural data and material culture indicate a surprisingly low degree of indigenous acculturation to Roman culture.