1 | UCBX | United Carbon Co., Inc. | 7/1935-4/1961; eliminated 10/1963 | | NAKINA |
2 | UCBX | United Carbon Co. | added 10/1963; 7/1965-10/1966; eliminated 1/1969 | | NAKINA |
3 | UCBX | Ashland Chemical Co., Division of Ashland Oil & Refining Co., Carbon Black & Synthetic Rubber Division | added 1/1969; 4/1970; eliminated 4/1971 | | NAKINA |
4 | UCBX | Ashland Chemical Co., Division of Ashland Oil Inc., Carbon Black & Synthetic Rubber Division | added 4/1971; eliminated 7/1971 | | NAKINA |
5 | UCBX | Ashland Chemical Co., Division of Ashland Oil Inc. | added 7/1971; 1/1975; eliminated 1/1976 | | NAKINA |
6 | UCBX | United Carbon Co., Inc. | 4/38-10/66; eliminated 1/69 | | NRHS |
7 | UCBX | Ashland Chemical Co., Division of Ashland Oil & Refining Co., Carbon Black & Synthetic Rubber Division | added 1/69; 4/70; eliminated 4/71 | | NRHS |
8 | UCBX | Ashland Chemical Co., Division of Ashland Oil Inc., Carbon Black & Synthetic Rubber Division | added 4/71 | | NRHS |
9 | UCBX | Ashland Chemical Co., Division of Ashland Oil Inc. | Jan-75 | | NRHS |
10 | UCBX | ASHLAND CHEMICAL CO., CARBON BLACK & SYNTHETIC RUBBER DIV. [UNITED CARBON CO.] | | | PWRC |