September 13, 2011 Celeste Monforton, DrPH, MPH 3Comment

March 2, 2011 may have seemed like any other workday for David Clark Jr., 51, when he arrived at the Lee Creek potash mine in Aurora, NC at 5:50 am to start his shift. Clark and a small crew would be excavating a large ditch near the R9 roadway and burying a 22-inch diameter polyethylene […]