Yukon Exploration and Geology (YEG) is the main publication of the Yukon Geology Program (Indian and Northern Affairs Canada and Yukon Government). This is the 24th volume of the YEG series. It contains up-to-date information on mining and mineral exploration activity, studies by industry, and results of recent geological field studies. Information in this volume comes from prospectors, exploration and government geologists, mining companies and students who are willing to collectively benefit the Yukon's mineral industry. The 2001 volume has four parts. The fi rst - Mineral Industry - includes overviews of Mining and Exploration in the Territory. The second part - Government - outlines the activities and organization of the Yukon Geology Program. This section also includes updates on the Mineral Resource Assessments, the Yukon Mining Incentives Program, and announcements of the third Mining Land Use Reclamation Awards, the Robert E. Leckie Awards. The third part - Geological Fieldwork - contains reports describing regional mapping, and more detailed geological, geochemical, geophysical, geochronological, paleontological, paleomagnetic and placer deposit studies. The last part - Property Descriptions - is a collection of geological reports of mineral occurrences with recent exploration advances or detailed studies, and is authored by industry and government geologists, as well as university students.