We've digitized several chapters of the US Army Corps of Engineers "Electromagnetic Pulse (EMP) and TEMPEST Protection for Facilities." http://jya.com/emp.htm Pretty good specs for what to do outside the laboratory to protect against compromising emanations (and rude nukes), many previously discussed here. Reminder: Joel McNamara hosts the non-classified cornucopia: http://www.eskimo.com/~joelm/tempest.html