RAPID CITY, S.D. —The Rapid City Council got a presentation from Sheriff Brian Mueller this week on a proposed new tower to house inmates at the Pennington County Jail. Mueller and other law enforcement leaders say the inmate population is beginning to exceed the jail’s capacity. Cost estimates for the tower range from around $95 million to $140 million. Mueller says the plan is to request $30 million over 30 years from Rapid City to fund the project. Mueller said he plans to have a formal proposal submitted this summer with the goal of beginning construction this fall.