Shale gas sparks fracking frenzy

Published: Tuesday, 20 March 2012

The US shale gas revolution is causing a new gold rush in fracking fluid feedstock such as frac sand and ceramic proppants. But what is unconventional drilling? And can the boom be sustained for much longer?

Demand for fracturing sand and other industrial mineral proppants is booming, and it is all down to the US shale gas revolution.

Extracting natural gas from shale formation involves hydraulic fracturing (fracking) - a drilling technique which requires large amounts of water and sand to be blasted down wells to...

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