Tiller Corporation is the holding company for a family of companies dedicated to providing high quality aggregates and hot mi ... x asphalt to the construction industries. We are proud of our rich history of providing high quality materials and being a steward of the community and the environment. We serve our customers through a series of convenient sites located throughout the Twin Cities metropolitan market. Our divisions include: - Barton Sand & Gravel Co. manufactures and sells aggregate products primarily to road contractors and concrete, block, and pipe manufacturers. - Commercial Asphalt Co. manufactures and sells hot mix asphalt to pavement contractors. - Barton Enterprises, Inc. operates an asphalt cement storage facility with truck, rail, and barge loading and unloading capabilities. read more