Real world company prefixes
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S& SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ
SCA SCB SCC SCD SCE SCF SCG SCH SCI SCJ SCK SCL SCM SCN SCO SCP SCQ SCR SCS SCT SCU SCV SCW SCX SCY SCZ
SCMD SCMF SCMG SCMI SCMK SCML SCMM SCMN SCMP SCMQ SCMS SCMT SCMU SCMW SCMX
S& SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ
SCA SCB SCC SCD SCE SCF SCG SCH SCI SCJ SCK SCL SCM SCN SCO SCP SCQ SCR SCS SCT SCU SCV SCW SCX SCY SCZ
SCMD SCMF SCMG SCMI SCMK SCML SCMM SCMN SCMP SCMQ SCMS SCMT SCMU SCMW SCMX
| 1 | SCM | Strouds Creek & Muddlety R.R. | 1/75-1/94 | NRHS | |
| 2 | SCM | American Jet International | ICAO1 | ||
| 3 | SCM | RETIRED 04-20-92 (0687) ATP [STROUDS CREEK & MUDDLETY RR] | PWRC | ||
| 4 | SCM | Strouds Creek & Muddlety R.R. | 1/1975-1/1994 | NAKINA | |
| 5 | SCM | Strouds Creek and Muddlety Railroad | RSRV | ||
| 6 | SCM | SCHWARTZ, MILTON | SCAC4 | ||
| 7 | SCMD | SEACROWN MARITIME LTD | SCAC4 | ||
| 8 | SCMF | SCM LINES | SCAC4 | ||
| 9 | SCMG | S C M N GLOBAL | SCAC4 | ||
| 10 | SCMI | SPECIALITY CHEMICAL TRANSPORT SERVI | SCAC4 | ||
| 11 | SCMK | SCHURMA | SCAC4 | ||
| 12 | SCML | SOUTHERN CHOICE MOVING SERVICE LLC | SCAC4 | ||
| 13 | SCMM | SCOTT, MELVIN TRANSPORT INC | SCAC4 | ||
| 14 | SCMN | SCOBEY MOVING & STORAGE LTD | SCAC4 | ||
| 15 | SCMP | SUGAR CAMP 155 | SCAC4 | ||
| 16 | SCMQ | SCHICK MOVING AND STORAGE COMPANY | SCAC1 | ||
| 17 | SCMS | SMART CHOICE MOVERS INC | SCAC4 | ||
| 18 | SCMT | SCHMIDT TRANSPORTATION INC | SCAC4 | ||
| 19 | SCMU | SAFMARINE CONTAINER LINES NV | SCAC4 | ||
| 20 | SCMW | SCHULER, MARLYN | SCAC4 | ||
| 21 | SCMX | Shell Chemical Co. | 4/38-1/52 | NRHS | |
| 22 | SCMX | *SOUTH CAROLINA RAILROAD MUSEUM | PWRC | ||
| 23 | SCMX | +(SOEX) SHELL OIL COMPANY | PWRC | ||
| 24 | SCMX | Shell Chemical Co. | 7/1937-1/1943 | NAKINA | |
| 25 | SCMX | Shell Chemical Div., Shell Union Oil Corp. | 1/1945-1/1946 | NAKINA | |
| 26 | SCMX | Shell Chemical Corp. | 4/1947-10/1957; eliminated 4/1960 | NAKINA | |
| 27 | SCMX | Shell Chemical Co., a Division of Shell Oil Co. | added 4/1960; 4/1961-10/1966; eliminated 7/1969 | NAKINA | |
| 28 | SCMX | Shell Oil Co. | added 7/1969; 4/1970-7/2000 | NAKINA | |
| 29 | SCMX | Shell Oil Co. U.S. (Lubricants) | added 4/2003 | NAKINA | |
| 30 | SCMX | Shell Oil Co. | 7/2005 | NAKINA | |
| 31 | SCMX | Shell Oil | RSRV | ||
| 32 | SCMX | SHELL OIL COMPANY | SCAC4 | ||
| 33 | SCMX | Shell Chemical Corp. | Oct-57 | NRHS | |
| 34 | SCMX | Shell Chemical Co., a Division of Shell Oil Co. | 4/61-10/66; eliminated 7/69 | NRHS | |
| 35 | SCMX | Shell Oil Co. | added 7/69; 4/70-7/2000 | NRHS |