This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Drop bottom cupola. Cupola furnace with drop bottom the bottom plate and refractory can be easily removed to empty the furnace before stoppage Cubilot sur avec sole dmontable la sole peut tre facilement dmonte pour vidanger le four avant un arrt archive org California Digital Library Borvan PDold Images from The principles and