Great information, thanks for it! What do you mean about the compost being 'contaminated' though? Is that due to a breakdown product of the plastic, or are you speaking on an industrial scale where the compost is going to be used for something which can't contain any plastic for some reason? I'm just thinking if I had a compost bin at my house and one plastic spoon got into it, I would expect the compost to still be usable and I'd probably just pick it out when going to use the compost as fertilizer.