In Boyers, Pa., a recently opened 2,000-sq.-ft. data center has been purpose-built to protect against an electromagnetic pulse (EMP), either generated by a solar storm or a nuclear event. The company that built the facility isn't disclosing exactly how the data center was constructed or what materials were used. But broadly, it did say that the structure has an inner skin and an outer skin that use a combination of thicknesses and metals to provide EMP protection.