This traditional ecological knowledge and land use report provides information gathered during interviews with members of Fort McKay First Nation regarding the Joslyn North Mine Project and its impact on both the project area and the traditional territory of Fort McKay First Nation, as defined by using the McKillop's culturally significant ecosystems model. The study included a literature review, as well as meetings and 15 individual interviews. A traditional land use facilitator, an assistant, and a Fort McKay Industry Relations Corporation representative led the interviews, which were conducted and recorded in the interviewee's language of choice. Interviews focused on patterns of traditional occupancy and use, location of traditional sites, changes in the landscape and traditional occupancy in the interviewee's lifetime, environmental concerns related to development, plant and animal health, fish quality, overall environmental health, water quality and quantity, air quality, issues and concerns based on the interviewee's views of potential project impacts, and mitigation measures and recommendations. Interviewees were also encouraged to lead discussion into other topics of importance. The report provides a cultural and historical context section that discusses regional Aboriginal groups, historical and cultural background, and the traditional life-ways of Fort McKay First Nation. Results of the literature review are presented, and a detailed discussion of both historic and current traditional land use of both the local regional study areas is provided. The report also details the issues and concerns regarding development on a number of items. The project-specific and cumulative effects are also reviewed. An appendix summarizes the traditional ecological knowledge of Fort McKay community members.