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Explore damage prevention information, local contacts and rules for safe digging in Montana.
811 or 800-424-5555
24 / 7
2 business daysNumber of days in advance of a digging project that you need to notify the one call center of your intent to dig.
Marks Valid: 30 DaysDefines the period of time the facility marks (paint, flags, stakes, etc.) are valid according to state law or practice.