Diggers Hotline - WI It is our policy to call Diggers Hotline prior to installing a post.  Diggers Hotline requires 3 business days (excluding weekends and holidays) from the date of the phone call to mark the underground lines. WE MAKE THIS CALL FOR YOU! Be sure to accurately complete the required information on the installation form. The 3 business day allowance policy begins when all of the correct information is received.

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