The Minefill series of symposia offers an international forum for exchanging ideas; presenting new technologies; and reviewing advancements in preparing, placing, and using mine backfills. The papers in this volume highlight recent advances in the industry, including a number of new paste-plant start-ups and increased industry knowledge of backfill behavior. Case histories are presented to illustrate the practical application of new technlogies. Because treatment of mine wastes is an increasingly important and visible aspect of mining, the information shared at this symposium and in this volume is crucial to success in the industry.