Page 51 - 2022 Sustainability Report

ENVIRONMENTAL STEWARDSHIP

Solar Garden under a long term subscription agreement. Similarly, at our Hatton and Jones Mill, Arkansas quarries, we have
installed solar power panels that power the offices, labs and training rooms during daylight hours.

Minnesota Solar Garden

Scope 3 Emissions

Scope 3 emissions are not produced by the reporting organization, and are not the result of activities from assets owned
or controlled by the reporting organization, but are emissions that indirectly affect its value chain. The Scope 3 emissions
for one organization are the scope 1 and 2 emissions of another organization. Scope 3 emissions are also referred to as
value chain emissions.

At this time, the Company is continuing to review the process for gathering, measuring and reporting this data. We are
also are awaiting the final position on Scope 3 emissions of the U.S. Securities and Exchange Commission in its final
climate disclosure rule that we expect will be published this year, and we will of course comply with those requirements.

For many service related businesses, Scope 3 emissions make up the bulk of the GHG footprint. However, as a
manufacturing business, we believe that the bulk of our Scope 3 emissions are most likely from the transportation of our
products. Transportation commonly occurs by truck with attendant GHG emissions related to diesel fuel. However, we are
also the largest rail shipper of aggregates in the U.S., which is more efficient and less GHG intensive for longer shipments.
We are a limited buyer of other inputs that are not already covered under our Scope 1 and 2 emissions data.

Efforts to reduce transportation-related emissions will increasingly be incentivized by regulation. Heavy on-road trucks are
already highly regulated and we expect emissions standards will continue to become stricter. We expect that railroad
engines will face similar standards. We will continue to support our vendors in their efforts to reduce their Scope 1
emissions, thereby reducing our Scope 3 emissions.

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