Hi Kardav, to lose your crops like that is an absolutely awful thing to happen. The problem first emerged in 2008 with manure contaminated with Aminopyralid weed killer but two years later and alot of campaigning to get it totally banned, we still have this dreadful contamination from both Aminopyralid and Clopyralid. Garden Organic are asking everyone whose crops have been affected to fill out this quick questionnaire (there's only five questions).
Aminopyralid and Clopyralid Contamination Questionnaire