The Mojave Northern Railroad is a private carrier owned by Cemex USA, an American subsidiary of the Mexican multinational supplier of concrete and building materials.
[1] Southwestern Portland Cement Company was absorbed by American subsidiary Cemex USA.
For many years, the railroad operated saddle-tank steam engines pulling trains of side-dump cars.
In the diesel era, the railroad operated three of the unusual Fairbanks-Morse FM H-20-44 model opposed-piston locomotives.
The railroad now operates conventional diesel engines pulling open-top hopper cars.