the marcellus shale- up as high as 500 tcf!!!

The Marcellus shale is elephant country!!! Check this out...

"The Marcellus Shale is one of the largest natural gas fields in North America, and its scope is expanding. It has the potential to generate a multi-billion-dollar direct impact on the economy, with multiplier effects rippling through virtually all regional industries.

In 2002, a U.S. Geological Survey estimated that the Marcellus Shale formation held 30.7 trillion cubic feet (tcf) of natural gas – a colossal amount for the U.S. considering that the U.S consumes about 23 tcf of natural gas per year, but only produces about 19 tcf.

But according to a recent study, which takes into account the technological advances made in the industry from 2002 to the present, the Marcellus formation could hold a volume up as high as 500 tcf – more than 16 times the old estimate."

http://www.marcellusfacts.com/pdf/homegrownenergy.pdf

JB