The South Carolina Historical Magazine vol. 109, #4 dated October 2008 (but running about a year behind in publication) carries an interesting article by part-time Beaufort resident, Marty Davis. Come to the BDC to read "Coosaw Rock Alchemy: A Short History of River-Phosphate Mining in Beaufort County," by John Martin Davis, Jr., pp. 269 - 294.
To whet your appetite to learn more, Davis states that: