CHARLES E HUNTER ET AL 1942 NORTH CAROLINA DEPARTMENT OFCONSERVATION & DEVELOPMENT BULLETIN 42 CHROMITE DEPOSITS OFCAROLINA P 16 & PL 8JASPER L STUCKEY & STEPHEN G CONRAD 1958 NORTH CAROLINADEPARTMENT OF CONSERVATION & DEVELOPMENT BULLETIN 71 EXPLANATEXT FOR GEOLOGIC MAP OF NORTH CAROLINA PP 19-20