Page 42 - 2023 Sustainability Report

SAFE OPERATIONS

MSHA Citations

The United States Department of Labor’s Mine Safety and Health Administration (MSHA) inspects each surface mine at least twice
a year and each underground mine at least four times a year. As shown below, in the citations per inspection graph, MSHA
conducted 688 inspections and spent 2380 inspection days at Martin Marietta sites in 2023 and our operations were declared
“Citation-Free” in 59% of those inspections. Our 2023 compliance performance was consistent with our strong historical
performance as follows:

• Citation-per-Inspection (CPI) Rate: 1.08 vs. 1.81 for the industry

• Citations-per-Day (CPD) Rate: 0.31 vs. 1.08 for the industry.

MSHA citations issued per inspection at Martin MSHA citations per day at Martin Marietta operations
Marietta operations are lower than the Aggregates, are lower than the Aggregates, Cement & Lime
Cement and Lime Industry Industry

2.5 1.6
1.4
2
1.2

1
1.5
0.8
1
0.6
0.4
0.5
0.2

0 0
2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Agg. Cement, & Lime Industry Martin Marietta Agg. Cement & Lime Industry Martin Marietta

40 2023 SUSTAINABILITY REPORT