Table Name | Field Name | Definition | Valid Values | Description
railroad.aat |  |  |  |
| RR_NAME | 75,75,C |  | Displays the operator of the line.
|  |  | Burlington Northern Santa Fe Railway |
|  |  | Cedar River Railroad |
|  |  | Canadian National Railway |
|  |  | City of Duluth |
|  |  | Canadian Pacific Railway |
|  |  | Dakota Rail, Inc. |
|  |  | Dakota, Minnesota and Eastern Railroad |
|  |  | Duluth, Missabe and Iron Range Railway |
|  |  | Duluth and Northeastern Railroad |
|  |  | Duluth, Winnipeg and Pacific Railway |
|  |  | I & M Rail Link, LLC |
|  |  | LTV Steel Mining |
|  |  | Minnesota Central Railroad |
|  |  | Minnesota, Dakota and Western Railway |
|  |  | Minnesota Northern Railroad, Inc. |
|  |  | Minnesota Commercial Railway Company |
|  |  | Minnesota Zephyr, Ltd. |
|  |  | Northern Plains Railroad |
|  |  | Nobles Rock Railroad |
|  |  | Northshore Mining Company |
|  |  | Otter Tail Valley Railroad |
|  |  | Red River Valley & Western Railroad |
|  |  | St. Croix Valley Railroad Company |
|  |  | St. Louis & Lake Counties Regional Rail Authority |
|  |  | Twin Cities & Western Railroad Company |
|  |  | Union Pacific Railroad |
|  |  | Wisconsin Central Ltd. |
| RR_ABBR | 10,10,C |  | Displays the abbreviations of the operator names. These abbreviations are determined by the Federal Railroad Administration with two exceptions: The abbreviations listed for Canadian Pacific Railway and NorthShore Mining Co. are abbreviations assigned by the Mn/DOT Office of Freight, Railroads and Waterways, not the FRA abbreviations.
|  |  | BNSF | Burlington Northern Santa Fe Railway
|  |  | CEDR | Cedar River Railroad
|  |  | CN | Canadian National Railway
|  |  | CODX | City of Duluth
|  |  | CPR | Canadian Pacific Railway
|  |  | DAKR | Dakota Rail, Inc.
|  |  | DME | Dakota, Minnesota and Eastern Railroad
|  |  | DMIR | Duluth, Missabe and Iron Range Railway
|  |  | DNE | Duluth and Northeastern Railroad
|  |  | DWP | Duluth, Winnipeg and Pacific Railway
|  |  | IMRL | I & M Rail Link, LLC
|  |  | MCTA | Minnesota Central Railroad
|  |  | MDW | Minnesota, Dakota and Western Railway
|  |  | MNN | Minnesota Northern Railroad, Inc.
|  |  | MNNR | Minnesota Commercial Railway Company
|  |  | MZL | Minnesota Zephyr, Ltd.
|  |  | NPR | Northern Plains Railroad
|  |  | NRR | Nobles Rock Railroad
|  |  | NSM | Northshore Mining Company
|  |  | OTVR | Otter Tail Valley Railroad
|  |  | RRVW | Red River Valley & Western Railroad
|  |  | SCXY | St. Croix Valley Railroad Company
|  |  | SLLX | St. Louis & Lake Counties Regional Rail Authority
|  |  | TCWR | Twin Cities & Western Railroad Company
|  |  | UP | Union Pacific Railroad
|  |  | WC | Wisconsin Central Ltd.
|  |  | ZLTV | LTV Steel Mining
| RR_CODE | 2,2,C |  | A unique numeric two-digit code assigned to each operator by Mn/DOT's Office of Freight, Railroads and Waterways.
|  |  | 01 | Burlington Northern Santa Fe Railway
|  |  | 02 | Union Pacific Railroad
|  |  | 05 | Canadian Pacific Railway
|  |  | 06 | Duluth, Missabe and Iron Range Railway
|  |  | 07 | Cedar River Railroad
|  |  | 08 | Canadian National Railway
|  |  | 09 | Duluth, Winnipeg and Pacific Railway
|  |  | 10 | Duluth and Northeastern Railroad
|  |  | 12 | Minnesota, Dakota and Western Railway
|  |  | 13 | Minnesota Commercial Railway Company
|  |  | 14 | LTV Steel Mining
|  |  | 15 | Northshore Mining Company
|  |  | 17 | Minnesota Central Railroad
|  |  | 19 | Dakota Rail, Inc.
|  |  | 20 | Dakota, Minnesota and Eastern Railroad
|  |  | 42 | Otter Tail Valley Railroad
|  |  | 43 | Wisconsin Central Ltd.
|  |  | 44 | Red River Valley & Western Railroad
|  |  | 45 | Nobles Rock Railroad
|  |  | 52 | St. Louis & Lake Counties Regional Rail Authority
|  |  | 53 | Twin Cities & Western Railroad Company
|  |  | 55 | City of Duluth
|  |  | 56 | Minnesota Zephyr, Ltd.
|  |  | 58 | Minnesota Northern Railroad, Inc.
|  |  | 59 | Northern Plains Railroad
|  |  | 60 | I & M Rail Link, LLC
|  |  | 61 | St. Croix Valley Railroad Company
| RR_CLASS | 10,10,C |  | Displays the railroad classes that are determined by the Surface Transportation Board. The classes are based on the annual operating revenue that is generated.
|  |  | 1 | Greater than $255 million
|  |  | 2 | Between $20.4 and $255 million
|  |  | 3 | Less than $20.4 million
|  |  | Private | Either mining or excursion