Page 28 - 2023 Sustainability Report

COMPANY OVERVIEW

Committed to Safety

2023 was again one of the Company’s safest years on record, with a company-wide Total Injury Incident Rate (TIIR) of
0.78, again exceeding the world-class rate of 0.90, inclusive of acquired operations. Our Southwest and East Divisions led
the way with TIRRs of 0.63 and 0.69 respectively. For the seventh consecutive year, we also attained a world-class Lost-
Time Incident Rate (LTIR). At Martin Marietta, safety performance sets the foundation of long term financial strength and
successful execution of our SOAR strategy. We believe this performance is a reflection of the Company’s Guardian Angel
safety culture which encourages each employee to take personal responsibility for working safely and helping others work
safely. That is, to be a good Wingman.

World-Class Safety
We are committed to our Guardian Angel safety culture where Zero is Possible, and achieved a world-class
lost-time incident rate (LTIR) for the seventh consecutive year. With a company-wide Total Injury Incident
Rate (TIIR) of 0.78, we exceeded the world-class rate of 0.90.

99.9% 99.1% 84 23
of employees experienced of employees experienced business units have worked business units achieved
ZERO lost-time incidents ZERO incidents more than 500,000 hours with safety milestones
ZERO lost-time injuries

World-Class
Safety Level
1.34 1.26 0.93 0.84 0.78 0.78 (0.90)

2010 2015 2020 2021 2022 2023
Note: Safety data as of 12/31/22. TIIR per 200,000 man hours worked. World-class levels based on general industries.

26 2023 SUSTAINABILITY REPORT