Japan Concedes Severity of Blast, Wall Street Journal, June 7, 2011:
Tokyo’s nuclear regulator revealed an apparent leak in the lid of Reactor No. 2′s containment vessel. That container was a crucial barrier between the overheating nuclear fuel rods at the reactor and the outside world, and the new information suggests radioactive substances were surging through holes that were collectively the size of a business card.
Published: June 7th, 2011 at 10:57 am ET