T4F History | MillerWelds

Tier 4 Final

Tier 4 History


Helping Us All Breathe Easier

Stronger T4F emissions standards help clean the air; by 2030, the EPA estimates 12,000 lives could be saved, 8,900 hospitalizations prevented and 1 million lost workdays recovered.
(Source: http://www.epa.gov/oecaagct/tfuel.html)


A History of Tier 1 - Tier 4 Final