As Clean as it Gets

The award-winning Muscatine biosolids program uses an umbilical system to deliver material sight unseen to a tractor-drawn injector.
As Clean as it Gets

Drive past a farm where City of Muscatine, Iowa, staffers are applying

biosolids and you probably wouldn't know what you were watching.

You'd never see or smell the material. You'd simply see a tractor crawling across the field, apparently doing tillage work — except that it's...

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