1 | HCTX | Martin Marietta Corp. | added 4/1990; 1/1994; eliminated 7/1996; 7/2000 (not listed) | | NAKINA |
2 | HCTX | Hallett Construction Co. | added 4/1971; 1/1975-1/1980; eliminated 4/1990 | | NAKINA |
3 | HCTX | Hallett Construction Co. | added 4/71; 1/75-1/80; eliminated 4/90 | | NRHS |
4 | HCTX | Martin Marietta Corp. | added 4/90; 1/94; eliminated 7/96; 7/2000 | | NRHS |
5 | HCTX | *HALLETT CONSTRUCTION CO. | | | PWRC |
6 | HCTX | *(MMAX) MARTIN MARIETTA CORPORATION | | | PWRC |
7 | HCTX | Hallett Construction (Martin Marietta Corporation) | | | RSRV |