This is the tenth volume in The Mineral Statistics of the United Kingdom series and continues the coverage of Central and North Wales. It gives details of the output, ownership, management and employment at several hundred mines, mainly around the lead districts of Halkyn and Minera mountains. The data provides an invaluable aid to the interpretation of surviving site remains and the book’s use as a field guide is facilitated by the addition of modern Ordnance Survey Grid References.The only volume currently to be available on this nationally important mining area, it provides a brief overview of the development of metal mining from the eighteenth century to modern times and essential material for future research.