solar flares

SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids FIRST X-FLARE OF THE NEW SOLAR CYCLE: Sunspot 1158 has unleashed the strongest solar flare in more than four years. The eruption, which peaked at 0156 UT on Feb. 15th, registered X2 on...

Im interested in constructing an area or underground bunker to house electronic equipment safely from emp or solar flare activity. Any ideas on type of construction, material, etc. to properly build such an area? All input welcome. Thanks