Dixon Rock & Materials has carved out a niche in Arizona, supplying rock and aggregate materials to a range of clients, including contractors, mines and retail customers.
The operation owned and operated by John Dixon may be lean, but its productivity is anything but thanks in part to a carefully selected fleet of machines.
Dixon Rock runs a setup from Powerscreen Western that includes an MDS M413 heavy-duty trommel, a Powerscreen 1300 Maxtrak cone crusher, a Powerscreen Chieftain 2200 inclined screen and four CT80 stacking conveyors. This integrated system allows the team to produce multiple material sizes while maintaining full control over the quality and consistency of their end product.
Meeting specifications
Dixon Rock is a tightly run operation that processes raw material into three key products: 8- to 12-in. riprap, 4- to 8-in. riprap and Class 1 ADOT-spec aggregate base course, which is better known as ABC.
The operation’s process begins with the M413 trommel, which is used to separate larger rock into riprap products while sending finer material downstream for further processing.
“The M413 has been a gamechanger for us,” Dixon says. “It handles everything we throw at it – big rock, sticky material, you name it. And with the built-in stockpiling conveyors, it makes keeping the site organized a lot easier.”
The M413 can process up to 330 tph, and its build allows it to screen rock as large as 24 in. With a compact design and foldout conveyors, the M413 fits sites where mobility and space efficiency matter.
Beyond the M413, all fines are routed to the Chieftain 2200, an inclined screen that features dual double-deck screen boxes. It separates fines from overs and is used to meet the gradation requirements of the company’s customers.
Oversized material from the Chieftain is then fed through the 1300 Maxtrak cone crusher, which crushes the overs down to size before sending them back through the Chieftain for final screening. Ultimately, the 1300 Maxtrak produces Class 1 ABC that meets ADOT (Arizona Department of Transportation) specifications.
