In 1949 the club was refounded as BSG Franz Mehring Grube, becoming BSG Aktivist Brieske-Ost in 1950.The club was re-named SC Aktivist Brieske-Senftenberg in 1954 and played in the DDR-Oberliga and was in the midfield of the table.In the early 1960s the club was relegated till Cottbus Bezirksliga. One squad formed a new team in 1963 SC Energie Cottbus, the reserve team formed BSG Aktivist Senftenberg. The club still exists as FSV Glückauf Brieske-Senftenberg today.