"The health impacts are also concerning because little is known about the chemicals used in the process and there is some research showing that they have carcinogenic properties."

The Irish News (2011) "The Fracking Debate - Potential goldmine or a ticking timebomb? - Method of gas sourcing divisive"
Dr Carroll O'Dolan, a GP from Florencecourt, member of the Fermanagh Fracking Awareness Network