Signs point to fracking. Natural gas is mainly methane. Fracking involves drilling an oil or gas well vertically and then horizontally into a shale formation. A mixture of highly pressurized water ...

The Bretec mid-segment hydraulic breaker product range includes 10 models that are suitable for carriers in the 1.2- to 40-ton operating weight class. Silenced models with a box-type housing or ...

Nitrogen (N) equilibrium isotope fractionation (15α) involving gaseous, dissolved, and solid phases of ammonia (NH3) and ammonium (NH4+) (e.g., NH3(g)–NH3(aq)–NH4+(aq)–NH4+(s)) represents a ...