Edge runner machine mixing of foundry chemicals, plasters, moulding sand, foundry fluxes, food colours, etc. excellent where an amount of binder or agglomerate is to be blended into the material. Also used for densification of the mixture. The pan is stationary inside which rotate heavy duty mullersrollers. The heavy wide rollers ride over the material where intensive crushing, shearing and mixing action takes place. Scrappers and ploughs are provided for directing the mass into the path of the rollers. The machine is also available with granite rolls and pan.