Preface, v; Introduction; I The Mineral Statistics, vii; II Flintshire Mineral Production, ix; III Denbighshire Mineral Production, xiv; IV The Mine Tables, xvii; County Production Tables, xxiii; Figure 1: Denbigh and Minera Lead Production, xxix; Figure 2: Flint and Denbigh Share of Total UK Output, xxx; The Tables of Production, Ownership, Management and Employment; Flintshire Mines; Abbot Fawr to Byrllnblas, 1-12; Cae Coch to Cwmllanerch, 12-20; Dafern Dywyll to Dyserth Castle, 20-24; Ebury to Fronissa, 24-30; Garneddwen to Gyrn, 30-37; Hafna to Howell, 37-54; Jamaica to Lord Richard, 54-60; Machno to Mount Pleasant, 60-68; Nant to Orsedd, 68-70; Pant to Pwllwheal, 70-93; Quarry to Rock, 93-98; Saithaelwyd to Summer Hill, 98-103; Talacre to Tyrbach, 103-113; Ucha United to Vron, 113-116; Waen to Wynn, 116-120; Sundries, 120-121. Denbighshire Mines; Aberduna to Bwlchgwyn, 125-127; Caepant to Crest, 128-130; Deans to Elwy River, East, 130-133; Ffrith Redyn to Grosvenor, 133-134; Hendre Ddu to Lowes Park, 135-138; Maesysafn to Mona, 138-149; Nant Uchaf to Powis Mine, 149-154; Raglan to Steddfod, Lower, 155; True Blue to Union, Old, 155-157; Waenlas to Yroncysyllte, 157-160; Sundries, 160; Appendix: List of Mines Arranged by Grid References, 161.