Air Pollution Control Commission v. District Court

The petitioners sought relief in the nature of prohibition pursuant to C.A.R. 21. An order by the District Court of the City and County of Denver, in effect, compelled the Air Pollution Control Commission of the State of Colorado and a number of other parties to defend simultaneously identical civil actions in the District Court for the County of Morgan and in the District Court for the City and County of Denver. The petitioners allege that the District Court for the City and County of Denver is proceeding in excess of its jurisdiction for reasons which are hereinafter enumerated. We issued a rule to show cause and now make the rule absolute.