Prisoners worked the crust's mines; the ores extracted were exported to fund the prison.
Nuri the Clawdite freed Wat Tambor from imprisonment on Delrian. Doctor Cornelius Evazan later escaped from the planet after he was institutionalized there. Under the New Republic, the prison was overseen by Wardex Simyl Fruul, who had to handle a prisoner revolt assisted by corrupt staffers at Mine Head 37.
- Galaxy Guide 1: A New Hope (First mentioned) (As "Delrian Prison Planet")
- The Movie Trilogy Sourcebook
- The Essential Guide to Characters (as Delarian)
- Galactic Campaign Guide
- The Official Star Wars Fact File 51 (CAN11, Mos Eisley Cantina Characters)
- The New Essential Chronology
- The Complete Star Wars Encyclopedia
- The Essential Atlas