Page 49 - 2022 Sustainability Report

ENVIRONMENTAL STEWARDSHIP

This level of Scope 1 CO e emissions constitutes less than four percent of total GHG emissions attributed to the cement
2
industry in the United States, as reported to the USEPA in 2020. Our 2022 Scope 2 CO e emissions were 0.626 million
2
metric tonnes across all business lines. On a global basis, the Scope 1 emissions from our cement business constitute
approximately 0.10 percent of the worldwide CO e emissions from cement production and our combined Scope 1 and 2
2
emissions for our entire business is only a fraction of those of our global competitors as shown in the chart below. 1

Select Examples of Scope 1 and 2 GHG Footprints (million metric tonnes CO e)
2
255*

126
74.55 71.9
42.1 36
5.2
China Nat Mat Holcim Heidelberg Ultratech CEMEX CRH Martin Marietta

Sources: 2021 Annual Reports, Sustainability Reports, USGS, USEPA and PCA *CNM estimate by Bloomberg News

As noted above, global cement companies do not disclose their GHG intensity per tonne of product, but rather disclose
their Scope 1 GHG footprint in terms of intensity per tonne of cementitious material. However, if we look at their
footprint and ours in terms of total tonnes of GHG per tonne of all products sold, we get a much different picture. On
this basis, Martin Marietta’s total Scope 1 GHG footprint across all tonnes of products sold in 2022 results in a Scope 1
GHG intensity of 21kg of GHG per metric tonne of product. Based on our review of select global cement companies’
2021 Sustainability Reports, their GHG intensity across the value chain is considerably higher than ours due to their
cement-heavy product mixes. In fact, as shown on the table below, the next closest company has more than five times
more GHG per tonne of product across their value chain; Holcim has almost 10 times higher intensity across its product
range than Martin Marietta.

Scope 1 Emissions per Tonne of Product
Across the Value Chain
250

200

150

100

50

0
Mar n Marie a CEMEX CRH Heidelberg Holcim
kg of CO2

Sources: calculation based on estimated 2021 product volumes from public filings, sustainability reports and presentations.

1 Total estimated GHG emissions attributed to the cement industry in 2022 worldwide were 0.456 gigatonnes or, 4,560 million metric tonnes, of CO 2 e
out of a global carbon budget of 10.132 gigatons according to the Global Carbon Project.

MARTIN MARIETTA 47