Business Directory Go back to directory. No Photo Available Golden Route Operations – MT Golden Route Operations – MT Contact: Angela Omicioli Work 200 S. 5th St Miles City MT 59301 work Work Phone: (406) 234-5579work Biography Golden Route Operations (GRO) is a distributed gaming operator servicing all of Montana. GRO was originally established in Nevada in 1986. Currently, GRO is the largest distributed gaming operator in Nevada and operates approximately 9,600 machines in over 600 locations, and second largest in Montana. GRO has a proven track record and extensive experience in the route industry. Our success comes from two key factors; building relationships and providing unrivaled service. The services provided include updated operational cash credits on call tech service, updated route management software, Tier 1 reports and all state reporting.