Page 65 - Martin Marietta - 2024 Sustainability Report

ENVIRONMENTAL STEWARDSHIP

Our Midlothian Cement facility
Midlothian, Texas

Initiatives to Reduce Our Carbon Despite these regulatory constraints, Martin Marietta views
Intensity the use of alternate fuels and improving fuel efficiency as
important components of our overall commitment to
Although our actual carbon emissions from clinker
sustainability, including climate change-related issues and
production may be comparable to or better than European
concerns. In this regard, in addition to significant plant
producers, their ability to calculate reportable CO 2 upgrades and other modernization in which we have
emissions differently leads, in part, to a seemingly lower
invested, our accomplishments include the following:
carbon intensity calculation.
Simply put, because U.S. producers are more heavily regulated • As noted in prior Sustainability Reports, we have made a
if they wish to use alternative fuels, and must report a greater significant investment in tire processing systems at our
amount of the related CO emissions from such fuels than Midlothian Cement Plant. In 2024, tires made up nearly
2
their European competitors, and must use a higher percentage 41 percent of the plant’s fuel mix.
of clinker in domestic cement, carbon intensities are effectively • In the last eight years, we have dramatically reduced the
calculated differently for U.S. and European producers. We use of coal in our kiln fuel mixes from almost 70 percent
believe that our track record of achieving comparably to less than 7 percent of our total fuel usage at the
favorable clinker intensities to European producers, despite key Midlothian plant in 2024.
regulatory differences that give us fewer options for easily
• In late 2021, CALTRANS approved the use of Portland
reducing emissions through clinker substitution and alternative
Limestone Cement (PLC) in its specification. TXDOT has
fuel use in the U.S., highlights our record of investing in our
also approved PLC in its standard specification.
plants and continually improving our processes. It further
Accordingly, we converted approximately 90% of our
underscores our continued dedication to sustainable practices
Type I/II customers to our new Type 1L at our two Texas
in our operations.
plants. We estimate that this contributed to the
reduction in both actual Scope 1 emissions and intensity
“Despite these regulatory constraints, at our Midlothian Plant.
Martin Marietta views the use of

alternate fuels and improving fuel
efficiency as important components

of our overall commitment to
sustainability, including climate

change-related issues and concerns.”

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