Kids should play in sand, not breathe it in. Wisconsin’s New Auburn school district is upgrading air filters to prevent sand fragments from floating in from nearby frac-sand mines and getting into ...
A sand filter, or "filtration basin", is a stormwater quality treatment system that works by using a two-component clarification system: the first is a sediment forebay for settling large particles ...
International Child Care USA based in Kalamazoo, in partnership with Pure Water for Haiti, announces the installation of unique Bio-Sand Water Filters at 47 schools throughout rural Haiti. Further ...
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