Del. Code 29, § 10143 : State Government — Administrative Procedures — Judicial Review — Mandamus for agency action Date: 2 Sep 2016 TEXT PDF Current through 2016 Legislative Session, Act 399 Any person aggrieved by the failure of an agency to take action required of it, by law, may bring an action in the Court for an appropriate writ of mandamus. Del. C. § 10143 60 Del. Laws, c. 585, § 1; 62 Del. Laws, c. 301, §2.;