| 1 | PPNI | PRECISION PACKING & INSTALLATION | | | SCAC3 |
| 2 | PPNR | P P & R TRUCKING COMPANY INC | | | SCAC3 |
| 3 | PPNS | PP & S TRUCKING | | | SCAC3 |
| 4 | PPNT | PAPIN, NICK TRUCKING | | | SCAC3 |
| 5 | PPNV | PACIFIC PRIMATE NAVIGATION INC | | | SCAC4 |
| 6 | PPNX | PCS Phosphate Co., Inc. | added 4/1999; 7/2000-7/2005 | | NAKINA |
| 7 | PPNX | Pipestone Produce Co. (cars No. 6042-7563) (North Western Refrigerator Line Co.) | 7/1935 | | NAKINA |
| 8 | PPNX | Pipestone Produce Co. (cars No. 627-629) (American Refrigerator Transit Co.) | 7/1935 | | NAKINA |
| 9 | PPNX | PCS Phosphate Co., Inc. | added 4/99; 7/2000 | | NRHS |
| 10 | PPNX | PCS PHOSPHATE COMPANY | | | PWRC |
| 11 | PPNX | PCS Phosphate | | | RSRV |
| 12 | PPNX | PCS PHOSPHATE COMPANY INC | | | SCAC4 |
