"Preliminary Report on the Hawganda Mining Region in Nipissing County, Ontario" is a work by the famous author William Henry Collins, which is devoted to the study of mining deposits in this region of Canada. The book describes in detail the geological features, development of ore deposits and potential opportunities for mineral extraction in the Govganda district. The author analyzes various mining technologies and provides important data for understanding the potential of this region. The book is a valuable source of information for mining professionals and anyone interested in mineral exploration.