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And some of those barrels had whitish halos surrounding them and were suspected of containing DDT. And samples show that the area was heavily contaminated with the pesticide, but did not confirm what was in the containers. And as it is right now, the total number of barrels and what they contain remains largely unknown. The team's study was published back in September in the journal of Panez, Nexus Panez. That's proceeding with the National Academy of Sciences. The halos are produced when alkaline waste leaks into the water, reacts with magnesium, and creates magnesium hydroxide called butycite. Butycite eventually dissolves, resulting in the formation of calcium carbonate, which settles as this white, dark halo around these barrels. Just drop it.