Changes to the application process have led to an extension of the application period for those concessioners wanting to provide snowmobile or snowcoach tours into Yellowstone National Park beginning next year. Park Spokesman Al Nash says the changes were in response to comments submitted by local business operators during the rule-making process earlier this year. Nash says the park received comments from business operators who were interested in submitting proposals to provide over-snow service in Yellowstone in the future leading to the park making some changes to the prospectus. They then notified all those operators who had expressed interest in the issue that the deadline was being extended. The new deadline to submit an application is Monday, February 10th. The contract terms for 23 operators will be for ten years. The Park Service anticipates announcing the selection of the successful concessioners in April.