A unit of Delta Air Lines that provides ground services at Denver International Airport is eliminating 104 jobs there as a customer, Spirit Airlines, switches to another contractor. A public notice filed by DAL Global Services (DGS) with the state under the federal Worker Adjustment & Retraining Notification (WARN) Act says the workers whose jobs are being eliminated include passenger-service personnel (such as workers at ticket counters and gates) and ramp agents who deal with arriving and departing jets. DGS has been providing ground services for low-cost carrier Spirit (Nasdaq: SAVE) at DIA, but Spirit is contracting instead with another provider, Swissport International Ltd., the Denver Post reports. About 30 DGS workers will be taking similar jobs with Swissport. And according to a DGS statement to news media, the company is "working with those employees impacted by this transition to identify other opportunities within DGS as well as other positions at the airport."