"UPDATE: Taiyo Yuden have announced that they have resumed shipments of optical media as of March 24th, 2011. The company is currently producing CD-R media and expects to resume production of DVD-R media starting in early April. The company has also announced that it is donating 50 million yen to aid relief efforts to the earthquake/tsunami victims and their families."
...from the bottom of that linked page.
I don't feel any need to buy a geiger counter to examine any new TY discs.
JT