Des Moines Register: Dollar General Corp. plans to open one of its new, neighborhood-market-style DGX shops in the Equitable Building in downtown Des Moines. Construction workers are renovating the 5,700-square-foot space, located around the corner from Potbelly Sandwich Shop. While most Dollar Generals are in suburban and rural communities, the company opens DGX stores in downtown business districts. They are smaller and feature inexpensive grab-and-go items, like sandwiches and sodas.