SIOUX CITY, Iowa (AP) — A company has moved call center operations into Sioux City from a facility in Dakota Dunes, South Dakota. The Sioux City Journal reports that the Mass Markets center just east of the Sioux Gateway Airport already has about 300 workers, up from the 150-175 employed in Dakota Dunes. Anthony Marlowe is CEO of Mass Markets’ parent company, MCI, and he says the new location has space for more than 500 call center seats and is looking to hire more workers.

MCI has around 2,000 employees and eight call centers in the U.S., with a ninth in Nova Scotia, Canada.