How do contaminants get in food?

Our future work will include research to find out how and where the contamination occurs. However, our early due diligence and data lead us to a number of conclusions. For example, in food products, naturally occurring toxic and heavy metals; contaminated soil and water from agricultural farming methods; mine tailing runoffs, as well as storage, silos and transportation systems that can transfer certain contaminants as food is stored and transported.