Utah mine shutdown halts Union Pacific export iron ore unit trains

Utah mine shutdown halts Union Pacific export iron ore unit trains

By Bill Stephens | April 11, 2025

| Last updated on August 6, 2025


The mine, in Cedar City, suspended operations on Wednesday, ending shipments to the Port of Long Beach via UP

Bound for the Port of Long Beach, a Union Pacific iron ore train that originated in Cedar City, Utah, begins its descent of Cajon Pass in September 2021. Bill Stephens

The trade war between the U.S. and China has prompted a Utah iron ore mine to shut down, a move that at least temporarily ends Union Pacific unit train operations between Cedar City, Utah, and the Port of Long Beach, Calif.

Utah Iron LLC announced on Wednesday that it would close the Cedar City mine amid rising Chinese tariffs on imports from the U.S. The mine had been supplying Chinese steelmakers with iron ore.

“We are navigating uncharted waters with unfamiliar and seemingly insurmountable risks. While it pains us to suspend our mining operations, it is a necessary step while we regroup and adjust to current market pressures,” the mining company said in a news release.

UP began handling export ore from the mine to the Port of Long Beach in October 2020.

The service began with 90-car ore trains. UP eventually shifted to operation of 154-car, 21,500-ton ore trains that were more than 8,100 feet long and powered by up to eight locomotives in 3x3x2 distributed power configuration.

The traffic was the top carload commodity for Pacific Harbor Line, the neutral switching carrier that serves the ports of Los Angeles and Long Beach.

With two distributed power locomotives on the rear, a Union Pacific unit train of iron ore produced in Utah winds its way down Cajon Pass in California on its way to the Port of Long Beach in September 2021. Bill Stephens
Share this article