Officials At Vulcan Materials Company In Kingsport Say Measures Have Been Taken To Prevent Further Seepage Of Limestone Particles From The Company’s Kingsport Quarry Into The North Fork Holston River. Vulcan Was Recently Fined More Than 30-Thousand Dollars By The Tennessee Department Of Environment And Conservation After Limestone Particles Were Discharged Into The River. The Company Says It Hasn’t Observed Any Additional Seepage.