||The beginnings of clay manufacturing at the current Logan Clay site.
||Fire destroys the original plant.
||Plant is re-built on the original site.
||Barton A. Holl joins the company as a salesperson
Logan Clay Products Company established.
Barton Andrew Holl becomes president of the company. His vision for Logan Clay Products guided the growth of the company throughout the rest of the century. The Holl family remains active in the management of the company to this day.
||All kilns converted from coal fired to natural gas. Better production controls lead to stronger pipe bodies and allow Logan Clay to stop glazing pipe products.
||Logan Clay builds a manufacturing facility that includes a 360-foot tunnel kiln. Pipe moves through the kiln on rail cars as temperature rises gradually (to remove impurities in the clay and shale) from 300°F to 1550°F. Then the pipe is heated rapidly to 2000°F to achieve vitrification.
|1970 - 1972
||Transition to the Logan Clay "O" Ring compression joint system.
||Barton S. Holl named Chairman of the Board, a position he still holds today. His brother, Richard H. "Dick" Holl, promoted to President and Chief Executive Officer.
||State of the art manufacturing equipment added for large pipe (12" - 24" i.d.) production
||Tunnel kiln computerized.
||Manufacture of flue liners moved to Logan, Ohio plant.
||Addition of 6,000 gallon polyester resin tank, with a computer-controlled mixing system, allowing for more controlled mixing of resins and silica sands for O-ring joint production.
||Operational philosophy changed to demand-based production.
||Richard H. Brandt succeeds Dick Holl as President and Chief Executive Officer of Logan Clay.