http://www.w3.org/ns/prov#value | - And that???s huge.???Soil Artifacts May Have Beneficial Effect on HealthHoward???s research also suggests that some of that underground construction debris may actually be having a beneficial effect in certain polluted soils.Detroit???s industrial heritage has left its soils???like those of many cities???contaminated with lead and other heavy metals, from coal burning, smelting, lead paint, and le
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