Bagger 293 Wikipedia
It is called Bagger 293 by its current owner, RWE Power AG (the secondlargest energy producer of Germany). It was called RB293 by its former owner, the brown coal company Rheinbraun, which since 1932 was already a daughter company of RWE (but during an internal reshuffle in 2003 merged with another daughter company to form RWE Power AG).