Defending the Grid Against Electromagnetic Pulses and Geomagnetic Disturbances

http://breakingenergy.com/2013/08/21/defending-the-grid-against-electromagnetic-pulses-and-geomagnetic-disturbances/?utm_source=Breaking+Energy&utm_campaign=61754987ba-RSS_EMAIL_CAMPAIGN&utm_medium=email&utm_term=0_f852427a4b-61754987ba-407304281