One of the 200 Tier-4 compliant ET44ACs that UP owns leads a northbound MDVNP in the siding at Hazeltine, just north of Denver. GE has, as of this photo, sold 1,117 Tier-4 units to six Class 1 railroads. By comparison, EMD has sold only 100 Tier-4 compliant SD70ACe-T4s, all to UP.
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