About Us

Diamond Trucking, a family owned and operated business based in Phoenix, Arizona was founded by Dennis and Diann Miller in 1982. Through years of dedication to excellent customer service and building lasting relationships within the fuel industry Diamond Trucking continues to grow. On January 1st 2017, Diamond Trucking acquired Jonesco Trucking out of Bellemont, Arizona. Jonesco, founded in 1979, was another family owned business that had much of the same values and commitment to excellence that Diamond Trucking has. It was a great fit and a win-win for both companies. Jonesco primarily covered the Northern parts of Arizona and New Mexico as well as the Northwest regions of Arizona extending into the Las Vegas region of Nevada. With Diamond’s coverage in the southern parts of AZ, NM, and CA this allowed Diamond Trucking to be one of the largest Arizona based petroleum haulers. Current daily operations are now overseen by sons Jess and PJ Miller that maintain the vision of excellence to our customers and our employees.