The North Dakota Supreme Court last week clarified and expanded on the state’s natural accumulation rule, which precludes liability for injuries caused by the natural build up of snow and ice, as the state court was asked to consider two certified questions from a federal court.

The five-judge panel answered two questions certified from the U.S. District Court for the District of North Dakota asking if the accumulation rule applies to an oil well site in a rural area and if it applies if snow or ice conceals a condition substantially more dangerous than one normally associated with ice and snow.