Helium Resources of the United States- 2007

The total helium reserves and resources of the United States are estimated to be 732 Bcf as of December 31, 2006. This includes estimated measured reserves from previous helium resources reports, plus calculated reserves from DOE/EIA estimates of proved natural gas reserves and IHS Inc., cumulative gas production data, and estimated probable, possible, and speculative helium resources calculated from PGC estimates of natural gas resources for the seven PGC regions.