Initially, in February 1948, five osoblags were established, nameless, numbered from 1 to 5.[1] Later, they were given codenames, accordingly, Mineralny Минеральный (Minlag), Gorny Горный (Gorlag), Dubravny Дубравный (Dubravlag), Stepnoy Степной (Steplag) and Beregovoy Береговой (Berlag). Russian political prisoner and writer Georgy Demidov notices that this naming was arbitrary, unlike regular Gulag camps, which were commonly named after geographical features or major occupation.[2]