Demolition of an house entrance staircase concrete foundation using the non-explosive demolition agent Dynacem expanding grout. Photos presented below were kindly provided by Mr. Peter Hermes. He professionally carried out an environmentally friendly blasting in the town of Rheine. The complete documentation "9,5 tons staircase concrete foundation breaking, demolition and removal with expanding grout Dynacem non-explosive demolition agent. The silent and dust-free blasting of concrete within 24 hours" can be seen at: http://www.klartext-web.de/dynacem