Japan nuclear expert: Massive “re-melting” occurred at Reactor No. 3 (DIAGRAM)

Tweet: 2 sieverts per hour found at surface of water in basement — Worker says “outrageous” radiation level from melted-through fuel

TEPCO trying to “prevent re-criticality” at Reactor No. 3 — Temperature soaring in pressure vessel, up over 100°F in 24 hours even after increasing water injection

Unit 3 boric acid injection, to prevent re-criticality is also the No. 1.2, Yomiuri Shinbun, May 15, 2011

Water level now below BOTTOM of fuel rods in No. 1 — Suggests nuclear fuel is in a molten mass at bottom of reactor (VIDEO)

Water leaking from No.1 reactor, NHK, May 12, 2011

Hardly any water in Reactor No. 1 after flooding effort — “Containment vessel is likely to be broken and leaking”

Unit 1, you need substantial revision of the cooling system, MBS Mainichi News, May 12, 2011

Report: New TEPCO data unequivocally shows ongoing criticalities at Unit 2

TEPCO Data Shows Ongoing Criticalities Inside Leaking Fukushima Daiichi Unit 2, Gerson Lehrman Group, April 28, 2011