In 2006 TNO-ITSEF, a subsidiary organisation of TNO, was criticized for resisting publication of its test reports regarding widely used voting computers in the Netherlands. In the same year a Swiss research group refuted a widely publicized TNO report claiming UMTS radiation is a health hazard. The organisation also received criticism after the evacuation of 200 residents of an Amsterdam housing estate over fears of its structural integrity when the construction had been technically approved by TNO only five months earlier.