Cribbing has largely been replaced by hydraulic shoring in modern mining applications. Cave-ins in excavation is prevented using sloping, shoring and shielding. Mining beneath walls, shoring up the tunnel then collapsing it was also used. A few days later, structural engineers were confident that shoring efforts would prevent imminent collapse. Concrete was poured continually and workers had to remove wooden shoring as concrete filled. It was cut through solid granite bedrock and required little shoring. Common methods of shoring are the use of "sheet piles" or "soldier beams and lagging". Extraction is commonly used to recover steel "H" piles used in temporary foundation shoring. Commonly used shoring equipment includes post shores, shoring beams, and timber jacks. After shoring up the building, the firemen resumed their search of the premises. The aid was aimed primarily at shoring up Western Europe, as the Cold War developed. Shoring up the debt-ridden Tunisian treasury was one of Cambon's main priorities. Gravediggers must make sure that the coffin can fit through the shoring. By late August, Moscow had committed to shoring up the current East German regime. Mike Oehler described a very low budget method he termed "post, shoring and polyethylene" (PSP).