21 July 2012, Japanese health officials were alerted to a case of cover up by a subcontractor to Tokyo Electric Power Company.  TEPCo operates the GE designed nuclear disaster reactors at Fukushima Daiichi.

The president of a subcontractor called Buildup, says one of his executives has just admitted that back in December 2011 he ordered their employees to cover their dosimeters with lead.

By covering their dosimeters the radiation exposure readings were much lower than what the workers were really being exposed to.  As a result Japanese health officials were given lower falsified exposure level data, which allowed the executive to keep his men working in highly contaminated areas.

The executive said he issued the order to falsify dosimeter readings when a radiation alarm went off in the area they were working in.  His main concern was not the safety of his men, but the completion of their work.  He claims he now regrets that decision.