Assertion: prion's material | /r/ObjectUse | used for leachate collection
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Source sentences:
text: For example, the acces sibility of prions to grazing animals and other soil-ingesting species is expected to depend in part on retention of the infectious agent near the soil surface, while the risk posed by landfilling infectious materials depends on prion mobility in the waste, soils used for daily cover, and granular materials used for leachate collection ().