| PART I |
| Notes on Lead Mining |
| PAGE |
| Sources of Lead Production in the United States (Walter Renton Ingalls) | 3 |
| Notes on the Source of the Southeast Missouri Lead (H. A. Wheeler) | 10 |
| Mining in Southeastern Missouri (Walter Renton Ingalls) | 16 |
| Lead Mining in Southeastern Missouri (R. D. O. Johnson) | 18 |
| The Lead Ores of Southwestern Missouri (C. V. Petraeus and W. Geo. Waring) | 24 |
| PART II |
| Roast-Reaction Smelting |
| SCOTCH HEARTHS AND REVERBERATORY FURNACES |
| Lead Smelting in the Scotch Hearth (Kenneth W. M. Middleton) | 31 |
| The Federal Smelting Works, near Alton, Ill. (O. Pufahl) | 38 |
| Lead Smelting at Tarnowitz (Editorial) | 41 |
| Lead Smelting in Reverberatory Furnaces at Desloge, Mo. (Walter Renton Ingalls) | 42 |
| PART III |
| Sintering and Briquetting |
| The Desulphurization of Slimes by Heap Roasting at Broken Hill (E. J. Horwood) | 51 |
| The Preparation of Fine Material for Smelting (T. J. Greenway) | 59 |
| The Briquetting of Minerals (Robert Schorr) | 63 |
| A Bricking Plant for Flue Dust and Fine Ores (Jas. C. Bennett) | 66 |
| PART IV |
| Smelting in the Blast Furnace |
| Modern Silver-Lead Smelting (Arthur S. Dwight) | 73 |
| Mechanical Feeding of Silver-Lead Blast Furnaces (Arthur S. Dwight) | 81 |
| Cost of Smelting and Refining (Malvern W. Iles) | 96 |
| Smelting Zinc Retort Residues (E. M. Johnson) | 104 |
| Zinc Oxide in Slags (W. Maynard Hutchings) | 108 |
| PART V |
| Lime-Roasting of Galena |
| The Huntington-Heberlein Process | 113 |
| Lime-Roasting of Galena (Editorial) | 114 |
| The New Methods of Desulphurizing Galena (W. Borchers) | 116 |
| Lime-Roasting of Galena (W. Maynard Hutchings) | 126 |
| Theoretical Aspects of Lead-Ore Roasting (C. Guillemain) | 133 |
| Metallurgical Behavior of Lead Sulphide and Calcium Sulphate (F. O. Doeltz) | 139 |
| The Huntington-Heberlein Process (Donald Clark) | 144 |
| The Huntington-Heberlein Process at FriedrichshÜtte (A. Biernbaum) | 148 |
| The Huntington-Heberlein Process from the Hygienic Standpoint (A. Biernbaum) | 160 |
| The Huntington-Heberlein Process (Thomas Huntington and Ferdinand Heberlein) | 167 |
| Making Sulphuric Acid at Broken Hill (Editorial) | 174 |
| The Carmichael-Bradford Process ( |
