Your Black Dirt Headquarters in the Twin Ports. Black soil and top soil, sand and gravel serving the Duluth, Superior, Twin Ports, MN area offers a variety of different soil options to the cites and entire surrounding areas. We pulverize and screen the dirt to provide you with the highest quality options. Some of the quality products we have here at the Dirt Factory are: Black dirtCustom mixed dirtClean fill dirtGarden soilAvailable for residential and commercial delivery, no order limits. Prompt, reliable and on time delivery! Call us today!