This volume is the eleventh in a series which documents the technical papers of the mine ventilation symposium, which was initiated in 1982 by the Underground Ventilation Committee of the Society for Mining, Metallurgy, and Exploration, Inc. In more recent years, the event has expanded to include all of North America and is known as the US/North American Mine Ventilation Symposium. The US/North American Mine Ventilation Symposium 2006 designated 'Coal Mine Methane Capture and Utilization' and 'Diesel Issues for Underground and Surface Mines' as topics of special interest. Numerous papers discussed these two topics, and there were presentations on mine dusts, mine fires, ventilation in large-opening mines, and numerous other ventilation topics. The symposium was supplemented by short courses on state-of-the-art in diesel emissions technology, computer analysis of ventilation circuits, personal dust monitoring, and methane capture technology. In addition, field trips to mines, research facilities, and methane gathering sites were offered to participants of the symposium. The book is of special interest to practitioners, educators, and researchers in the field of ventilation of mines, tunnels, and other underground facilities. Includes a CD-ROM of the proceedings.