No one ever pretended it would be easy finding the person or people responsible for the anthrax attacks, but mopping up the messes they have made in post offices and government buildings seemed like a pretty straightforward--if painstaking--business. As the Environmental Protection Agency experts assigned to decontaminate the Hart Senate Office Building are learning, however, cleanup may be the hardest part of the job.
The biggest problem with sanitizing a structure like the Hart Building is that it's so enormous: nine stories tall and 10 million cu. ft. in volume, with a 100-ft. atrium at its center. Perhaps the most direct...
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