•
BAM: Baikalo-Amurskaya Magistral,
Baikal–
Amur Mainline (railway) • BBK: Belomorsko-Baltiyskiy Kanal,
White Sea–Baltic Canal • ITL: "Ispravitelno-trudovoi lager'", corrective labor camp • LO: "Lesoobyedinenie",
Logging works complex • CW: Construction Works • CS: Construction Site • GES: "Gidroelektrostantsiya", hydro-electric powerplant •
Dalstroy:
Far East regional CW directorate • SMU: "stroitelno-montazhnoe upravlenie", Administration of construction and installation works •
NKVD: literally, the People's Commissariat of Internal Affairs •
MVD: literally, the Ministry of Internal Affairs • UVD: literally, the Administration of Internal Affairs, subordinated to
GUVD • GUVD: literally, the Main Administration of Internal Affairs, renamed
MVD •
NKV: literally, the People's Commissariat of Arms • OITK: "Otdel ispravitelno-trudovykh koloniy", corrective labor colonies department • OLP: "Otdel'ny lagerny punkt", separate
camp point •
OGPU: "Ob'yedinennoe glavnoe politicheskoe upravlenie", United Main Political Administration • PL: to mark sites that also detained Polish nationals • SGU: "Spetsialʹnoye glavnoye upravleniye Glavspetstsvetmeta", Special Chief Directorate of Glavspetstsvetmet • TMFM:
Traitor of Motherland Family Member (Russian: ЧСИР: член семьи изменника Родины), a category of repressed designated for the family members of the person who was recognized as the
Traitor of Motherland; some camps were specifically designated to this category. •
Yeniseystroy:
Yenisei River basin regional CW directorate
GULAG •
GULAG: "
Glavnoe
Upravlenie Ispravitelno-trudovykh
Lagerey", or
The Chief Directorate of Corrective Labor Camps • BAMLag: Directorate of
BAM camps •
Belbaltlag: Directorate of
White Sea–Baltic Canal camps, refer to previously mentioned BBK • GUAS: "Glavnoe Upravleniye Aerodromnogo stroitelstva", Chief Directorate of airport construction • GULGMP: "Glavnoe Upravleniye Lagerey (GUL) Gorno-Metallurgicheskoy Predpriyatiy", Chief Directorate of Camps in Mining and Metallurgical Enterprises • GULLP: "GUL Lesnoy Promyshlennosti", Chief Directorate of Camps in Forest Industry • GULTP: "GUL Tyazholoy Promyshlennosti", Chief Directorate of Camps in Heavy Industry • GULGTS: "GUL Gidrotekhnicheskogo stroitelstva", Chief Directorate of Hydroelectric CW • GULPS: "GUL Upraveleniye Promyshlennogo stroitel'stva", Chief Directorate of Industrial CW • GULZhDS: "GUL Zheleznodorozhnogo stroitelstva", Chief Directorate of Railway CW • GUSHOSDOR, GULShosDor, GULShDOR: "GUL Shosseynykh dorog", Chief Directorate of Camps in Highway CW •
Sevvostlag or SVITL (severo-vostochnye lagerya): Directorate of North-Eastern Camps, until 1939 was an independent system of labor camps outside of the main administration of camps,
GULAG. • USLON: "Upravlenie Severnykh Lagerey Osobogo Naznacheniya", Directorate of Northern Special Purpose Camps • USKMITL: "Upravlenie Solovetskogo and Karelo-Murmanskikh ITL", Directorate of
Solovki and
Karelia–
Murmansk Camps • SLON: "Solovetski Lager Osobogo Naznachenia",
Solovki Special Purpose Camp • KhOZU: "Khozyaystvennoe upravlenie MVD", Economic Directorate of the MVD • UITLK: "Upravleniye Ispravitelno-trudovykh Lagerey i Koloniy", Directorate of Corrective Labor Camps and Colonies • USVITL: "Upravleniye Severo-Vostochnykh Ispravitelʹno-trudovykh Lagerey", Directorate of Northeast Corrective Labor Camps ==Construction works==