Frontier expanded into the Alva-Enid market with the purchase of Enid Freight Lines in 1981. Also that year, they began operating Pioneer Express which served along interstate 40 to the Texas state line to include such points as Clinton, Weatherford, Elk City, and Sayre. Pioneer was merged with Frontier in 1983.

D&M Transportation, with both interstate and contract authority, was formed in 1982 to meet demands for truck load service and Just In Time service. Initially, all drivers were company employees, but in 1996 owner operators augmented the fleet to meet growing customer demands. D&M's trailer fleet is primarily 48 and 53 foot, 102 inch high dry vans.

In 1985, Frontier received intrastate authority to serve Tulsa county, placing them in the northeastern Oklahoma market.

In 1988, they purchased the interstate authority of Manning Truck Lines and began serving such points as Pauls Valley and Ardmore in southern Oklahoma. In May of 1991 they were granted intrastate authority to service additional southern Oklahoma points to include Chickasha and Lawton, Oklahoma.

To meet customer demands, they expanded into all aspects of transportation, distribution, and warehousing in 1991 with the acquisition of D&M Distribution Services, Inc., a Certified Minority Business Enterprise, and its 160,000+ square foot public warehouse facility. D&M 3rd Party Logistics was added and in 1994, we organized our resources as Dallas-Miller Logistics and positioned ourselves to meet future challenges and opportunities in the market place as an asset based logistical provider.

Among all the employees within the Dallas-Miller Logistics companies there is an enthusiasm and positive attitude toward the future and a confidence in fulfilling customer logistical needs. New equipment has been purchased and further purchases are budgeted to continually update our fleet, facilities, and communication capabilities. The management team is strong and balanced with the expertise to take them to new prominence.