The Ministry of Health is refusing to correct mistakes in its Paritutu Serum Dioxin study and has instead shut down access to data revealing the errors.
From the 1960s through to 1987, Ivon Watkins (later Ivon Watkins-Dow) made the herbicide 2,4,5-T which contained the toxic dioxin TCDD, at Paritutu.
In 2005, ESR carried out the study of local residents exposed to the dioxin.
The raw data has been available on the Ministry's website for almost two decades - but has been taken down following a plea from a former resident to have his mother's record corrected.
Taranaki Whanganui reporter Robin Martin has more.
