This study aims to analyze the application of publiccommunication in efforts to prevent unlicensed gold mining(PETI) in Mandailing Natal Regency. The type of data usedis primary data sourced from respondents and informants inthe area around the mine. Data was collected throughquestionnaires, in-depth interviews, and Focus GroupDiscussions (FGD). The results of the study found that theimplementation of public communication regardingunlicensed gold mining (PETI) has been carried out inMandiling Natal Regency, namely (1) publiccommunication is an important element in educating thepublic, building environmental awareness, and changing thebehavior of people involved in PETI. This involves deliveringclear, transparent, and relevant information to local social,cultural, and economic conditions. The success ofimplementing public communication depends oncollaboration between the government, communities,indigenous leaders, religious leaders, NGOs, and the privatesector. Active community participation is needed to create asense of ownership of the solutions offered; (2) overcomingPETI requires various communication strategies, such asevidence-based education, traditional and digital media use,public dialogue, and socialization of legal regulations. Themessage conveyed must be adjusted to the needs andunderstanding of the community; and (3) Various factors,including literacy levels, access to media, limited resources,and public trust in the government, influence theimplementation of public communication. Overcoming theseobstacles is the key to success. In addition to stopping PETIactivities, implementing public communication must offer sustainable alternative solutions for the community, such asskills training, locally-based economic development, andinvolvement in environmental conservation programs.