Japan Nuclear: "Lead Shields Masked Radiation Readings Up To 30%"
"Lead radiation shields forced on workers at the stricken Fukushima No. 1 nuclear power plant to cover their dosimeters masked radiation readings by about 30 percent."
"Tokyo Electric Power Co., operator of the plant, and Tokyo Energy and Systems Inc., a TEPCO group company, made the admission Aug. 8 after a test.
TES also acknowledged that when lead dosimeter covers were used on Dec. 1, eight of the subcontractor employees on the premises were working under illegal temporary staffing arrangements."Source: Asahi Shimbun, 08/10/2012