Deep excavations The Cutter Soil Mixing or CSM technique is a specialist foundation construction process for the formation of stiffened soil elements by the introduction and mixing of fluid binders into the soil. The technique has been developed and tested by BAUER Maschinen GmbH of Schrobenhausen, Germany in cooperation with Soletanche Bachy of Nanterre, France. This ground engineering technique was initially developed essentially as a method of soil mixing but with the development of more powe