The Green Chain: This homegrown Erin Brockovich story follows former Whakatāne sawmill worker Joe Harawira and his long battle to reveal the impact that workplace toxins have had on his community. In the '80s after being afflicted by health issues, Harawira noticed co-workers getting sick. In 1988 he helped found SWAP (Sawmill Workers Against Poisons) and began investigating the effects of exposure to dioxins, a byproduct of timber treatment.