| Ahring # 1 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Albreht Pits 1,3,&4 and 1 Unknown |  | Private |  | Clays | 
| Arthur Stephen Pit | Mexico Refractory | Private |  | Clays | 
| Aufderheide - Rousget Pit |  | Private |  | Clays | 
| Aufderheide Pit |  | Private |  | Clays | 
| Bergel Clay Pit |  | Private |  | Clays | 
| Biles # 1 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Boesch Pit Et.Al. | General Refractories | Private |  | Clays | 
| Branson # 1 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Braudhorst Pit |  | Private |  | Clays | 
| Bueker Pit |  | Private |  | Clays | 
| Bullard Pit |  | Private |  | Clays | 
| Bullington Pit | Harold Sassman Refractories | Private |  | Clays | 
| Campbell & Lichte Pit |  | Private |  | Clays | 
| Crites # 1 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Dahm Pit |  | Private |  | Clays | 
| Decker & Lacy Pit / Dittman Pit |  | Private |  | Clays | 
| Diebold - Rousset Brother Pit |  | Private |  | Clays | 
| Dingley Pit | Harbison - Walker Pit | Private |  | Clays | 
| Ernie- Robert Pit |  | Private |  | Clays | 
| Estes # 1 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Felhaber | General Refractories | Private |  | Clays | 
| Fisher Pit |  | Private |  | Clays | 
| Fitzgerald Pit |  | Private |  | Clays | 
| Frey #3 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Fritsch # 1 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Grays Pits |  | Private |  | Clays | 
| Grower Pit |  | Private |  | Clays | 
| Havener # 3 | Allied Chemical Corp., Industrial Chemicals Division | Private |  | Clays | 
| Heirs # 2 | Allied Chemical Corp. | Private |  | Clays | 
| Helkergoumer Pit | Langenberg Refractories | Private |  | Clays | 
| Hemplemann # 1 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Hesemann Pit | Kaiser Refractories | Private |  | Clays | 
| Hohenstreet # 1 | Harbison Walker | Private |  | Clays | 
| Homeyer #1 & 3 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Hunts # 2 |  | Private |  | Clays | 
| J.J. Brandhurst Pit |  | Private |  | Clays | 
| Jonas # 2 & 3 | Allied Chemical Corp., Industrial Chemicals Division | Private |  | Clays | 
| Jones | Industrial Chemicals Div. | Private |  | Clays | 
| Klick Pit |  | Private |  | Clays | 
| Lantenschlaeger Pit | Kaiser Refractories | Private |  | Clays | 
| Lindhardt # 4 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Linhart |  | Private |  | Clays | 
| Markley Pit |  | Private |  | Clays | 
| Mary Poppenhouse Pit |  | Private |  | Clays | 
| Maupin Pit | Mexico Refractories | Private |  | Clays | 
| Mc Curdy Pit |  | Private |  | Clays | 
| Meyer Pit - Et.Al. |  | Private |  | Clays | 
| Moss # 3 & 4 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Mueller Pits 1 & 2 |  | Private |  | Clays | 
| Muir # 1 | Allied Chemical Corp., Industrial Chemicals Division | Private |  | Clays | 
| Nebelsick Pit |  | Private |  | Clays | 
| Nicks # 1 | Allied Chemical Corp. | Private |  | Clays | 
| Piofcyk # 2 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Pletz # 1 | Allied Chemical Corp., Industrial Chemicals Division | Private |  | Clays | 
| Priess Rousset Pits 2 & 3 |  | Private |  | Clays | 
| Priess Roussett Pit # 1 |  | Private |  | Clays | 
| Priess-Rousset |  | Private |  | Clays | 
| Rehmert # 2 |  | Private |  | Clays | 
| Roberts Pit |  | Private |  | Clays | 
| Roethmeyer | Harbison Walker | Private |  | Clays | 
| Rose Pit |  | Private |  | Clays | 
| Rousset - Dorsch Pit | Mexico Refineries | Private |  | Clays | 
| Rutz # 1 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Sagez Pit |  | Private |  | Clays | 
| Sassman # 1 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Saur Pit |  | Private |  | Clays | 
| Schaffer # 7 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Schlotave Pit | Langenberg Refractories | Private |  | Clays | 
| Schmett Pit |  | Private |  | Clays | 
| Schulte Pit |  | Private |  | Clays | 
| Secgo Mine | Langenberg Mining Co. | Private |  | Clays | 
| Skornia # 1 | Allied Chemical Corp., Industrial Chemicals Division | Private |  | Clays | 
| Skornia-Uffman Jones # 1 | Allied Chemical Corp., Industrial Chemicals Division | Private |  | Clays | 
| Sneed # 1 |  | Private |  | Clays | 
| Snider Pit |  | Private |  | Clays | 
| Steinbeck Pit |  | Private |  | Clays | 
| Stoehr Pit | Mexico Refractories | Private |  | Clays | 
| T. Branson Pit Se Se |  | Private |  | Clays | 
| Tominia # 1 | Harbison Walker | Private |  | Clays | 
| Unknown |  | Private |  | Clays | 
| Unknown |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Rehmert Boesch | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Melvin Churovich | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | General Refractories | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  |  |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Missouri Refractories | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison Walker | Private |  | Clays | 
| Unknown - Clay | General Refractories | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison - Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Rehmert - Boesch General Chem. | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Missouri Refractories | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | C-E Refractories | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Duncan And Fritch Mining Co. | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Melvin Churovich | Private |  | Clays | 
| Unknown - Clay | Harbison Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Green Refractories Inc., A. P. | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Buecher General Refractories | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison - Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Green Refractories Inc., A. P. | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison - Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay | Harbison Walker | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay |  | Private |  | Clays | 
| Unknown - Clay Pits | Harbison Walker | Private |  | Clays | 
| Unknown - Clay Pits |  | Private |  | Clays | 
| Unknown - Clay Pits |  | Private |  | Clays | 
| Unknown - Clay Pits 2 |  | Private |  | Clays | 
| Unknown - Clay Pits 2 | Schoenberg - Roberts Pit | Private |  | Clays | 
| Unknown - Clay Pits 2 |  | Private |  | Clays | 
| Unknown - Clay Pits 2 |  | Private |  | Clays | 
| Unknown - Clay Pits 3 |  | Private |  | Clays | 
| Unknown - Clay Pits 3 |  | Private |  | Clays | 
| Unknown - Clay Pits 3 |  | Private |  | Clays | 
| Unknown - Clay Pits 4 |  | Private |  | Clays | 
| Unknown - Clay Pits 4 |  | Private |  | Clays | 
| Unknown - Clay Pits 4 |  | Private |  | Clays | 
| Unknown - Clay Pits 5 |  | Private |  | Clays | 
| Unknown - Clay Pits 6 | Harbison - Walker | Private |  | Clays | 
| Unknown - Clay Pits 6 |  | Private |  | Clays | 
| Unknown - Clay Pits 6 |  | Private |  | Clays | 
| Unknown - Clay Pits 7 |  | Private |  | Clays | 
| Unknown - Iron |  | Private |  | Clays | 
| Watkins Pit |  | Private |  | Clays | 
| Winter Pit |  | Private |  | Clays | 
| Wit Prewel Pit |  | Private |  | Clays | 
| Wotipka Pit |  | Private |  | Clays | 
| Zelch # 3 | Green Refractories Inc., A. P. | Private |  | Clays | 
| Zemann Pit No. 8 | Green Refractories Inc., A. P. | Private |  | Clays |