Page 68 - 2023 Sustainability Report

ENVIRONMENTAL STEWARDSHIP

Our Roadmap to our 2030 Targets and our NET ZERO
2050 Ambition

Our roadmap to achieving our reduction targets and our newly adopted ambition includes numerous actions we have
committed to, through current or recent investments and operational improvements, as well as future steps we are
evaluating, including:

Coal replacement and tire derived fuel (TDF) investments Capital investments in more efficient, lower
emission transportation systems and emissions
• In the last five years we have invested in tire handling
systems at both the Midlothian and Hunter Cement reduction equipment
plants and in 2023 tires made up almost 30% of our • Reduced fuel use in our aggregates business by converting
fuel mix from quarry trucks to conveyor belt systems in multiple
locations, right-sizing trucks and installing fleet
• We completed construction of a larger natural gas line
to the Hunter Cement Plant and further reduced our management software
coal usage • We have deployed 31 hybrid wheel loaders across our
footprint. We continue to evaluate them in a variety of
• We have reduced coal in the fuel mix at our cement
conditions. Initial results are promising and it appears
plants from a high of almost 70% to 9%
they are 20% more fuel efficient than a comparable
Use of additional alternative fuels, including the
traditional diesel loader. We are working with our other
purchase of wind energy and other renewables heavy equipment vendors as they develop their own
• In 2023 we continued to make use of B99 Biodiesel in our heavy electric and hybrid vehicle technology
Midwest Division and emitted almost 16,000 fewer metric • Continued upgrading our mobile equipment fleets to
tonnes of fossil fuel CO than if we had used ordinary newer, cleaner burning equipment
2
diesel
Operational improvements
• At our Woodville, Ohio lime Magnesia Specialties plant
we have completed a wind energy project that will • Adding slag to our process, using our CemStar patented
technology. In 2023, the slag addition represented over
provide much of the power needed to operate the 3% of our clinker production
facility
• We are currently undertaking a $135 million
• We are currently evaluating both wind and solar power modernization of our Finish Mill 7 at the Midlothian
projects across our businesses
Cement plant, which will increase efficiency and reduce
Rollout of PLC Cement energy consumption at the facility. We anticipate the
project will be complete in Q4 2024
• With the approval of PLC Cement by both CALTRANS and
TXDOT, in 2022 we embarked on a rollout of this product • Constructed three new loadout silos for customer trucks
at the Midlothian cement plant. In addition to increasing
• We have converted 90% of our Type I/II customers to cement storage capacity, these silos have reducied
our Type 1L (PLC) product
loadout cycle times by as much as 40 percent with an
• PLC cements contributed to the reduction of the GHG attendant reduction in diesel emissions (Scope 3) from
footprint of our cement business of 10.8% customer truck idling

Continued use of synthetic gypsum as a substitute Investments in our business to develop and market
for natural gypsum products that deliver meaningful environmental
benefits, including reducing emissions and chemical use
• Synthetic gypsum is a byproduct of flue gas
desulfurization (FGD) — a scrubbing technology utilized • Scrubber stone produced by our limestone operations
by many coal-fired power plants to reduce SO 2 is used by power producers in controlling sulfur
dioxide emissions
• In 2023 we reduced our need for mined gypsum by
almost 70% over 2017 • Products manufactured by our Magnesia Specialties
business assist in purifying industrial and municipal
• Using recaptured gypsum helped to divert more than wastewater, controlling sulfur dioxide in power plant gas
72,000 tons from overburdened landfills in 2023
streams, neutralizing nuclear waste and reducing
chemical usage and wood demand in paper production

66 2023 SUSTAINABILITY REPORT