The mine was initially developed in the late 1990s by a medium-sized mining company, Ross Mining. After six months the mine went into "care and maintenance", and never re-opened. Delta Gold acquired the mine through a take-over of Ross Mining. Eventually the mine was acquired by Placer Dome who were in turn taken over in 2006 by Barrick Gold.
Placer Dome undertook an intensive rehabilitation programme at the mine site, setting new standards for mining rehabilitation in New South Wales.
Timbarra Gold Mine was subject to intensive protest for several reasons:
The perceived risk of pollution to the Clarence River, especially from the use of the Cyanide process.
High diversity of threatened species, including rare frogs, on the site.