A lone drilling rig hammered away on a muddy, puddle-laden King of Prussia, PA, construction site on an unseasonably cold April morning. Future residents of the five-story, 248-unit suburban ...

Injecting polyurethane foam at various depths, in areas where soil problems exist is not new. The process has been deployed for decades but protected by patents which limited the number of contractors ...

Grouting has become an indispensable strategy for mitigating surface subsidence and enhancing rock‐mass stability in coal mining regions worldwide. By injecting cementitious, polymeric or ...