Northern Tilth has been working extensively with Resource Management, Inc. of Holderness, NH to develop and improve the quality of topsoils manufactured from paper mill residuals and otherwise low-value sand to re-vegetate disturbed land.  Most recently, these topsoils have been used to convert barren land into productive hayfields.  In addition to creating agricultural land from formerly disturbed land, these projects sequester greater than 40 tons of carbon per acre.