Page 39 - 2020 Sustainability Report

ENVIRONMENTAL STEWARDSHIP

Our Midlothian Cement facility
Midlothian, Texas

We believe that our track record of achieving comparably Despite these regulatory constraints, Martin Marietta views
favorable clinker intensities to European producers, despite the use of alternate fuels and improving fuel efficiency as
key regulatory differences affecting how emissions important components of our overall commitment to
intensity is calculated in the U.S., highlights our record of sustainability, including climate change-related issues and
investing in our plants and continually improving our concerns. In this regard, in addition to significant plant
processes. It further underscores our continued dedication upgrades and other modernization in which we have
to sustainable practices in our operations. invested, our accomplishments include the following:

Accordingly, although our actual carbon emissions from • As noted later in this Sustainability Report, we have
clinker production may be comparable to or better than made a significant investment in tire processing systems
European producers, their ability to calculate reportable at our Midlothian Cement Plant and are actively
CO emissions differently leads, in part, to a seemingly exploring adding additional equipment to our Hunter
2
lower carbon intensity calculation. Cement Plant in the next several years. Our permit for
our Hunter plant, however, caps our use of tires as
Simply put, because U.S. producers are more heavily
alternate fuels to 25 percent of the fuel mix.
regulated in using alternative fuels in production and must
both report a greater amount of the related CO emissions • In the last six years, we have dramatically reduced the
2
than their European competitors and use more higher- use of coal in our kiln fuel mixes at both cement plants
CO clinker in cement, carbon intensities are effectively from approximately 70 percent to 12.9 percent of our
2
calculated differently for U.S. and European producers. total fuel usage. In particular, at Midlothian, coal makes
up less than 7.3 percent of the kiln’s fuel, as compared
to 59 percent in the past. At Hunter, the percentage of
“Despite these regulatory coal in the fuel mix is 17.5 percent, down from 77

constraints, Martin Marietta views percent in 2014, and we are actively engaged in a
pipeline project to obtain additional supplies of natural
the use of alternate fuels and gas at Hunter as an alternative to coal use.

improving fuel efficiency as
important components of our overall

commitment to sustainability,
including climate change-related
issues and concerns.”

MARTIN MARIETTA 37