Greenhouse gases act like a layer of window glass in the atmosphere: They prevent heat from being radiated from the Earth's surface into space. Methane does that 28 times as effectively as carbon ...

Slurry shield tunnelling is a widely adopted method for stabilising tunnel faces during excavation in saturated and highly permeable soils. This process relies on a pressurised slurry—typically a ...

The WM 1000 is a mobile slurry mixer for dust-free addition of lime or cement for the cold road recycling process. Production of slurry is controlled automatically by a microprocessor system; then the ...

Livestock farming produces large quantities of greenhouse gases, especially methane, which is particularly harmful to the climate. Among other things, it escapes during the storage of animal excrement ...