U.S. Materials Sustainable Track Record

CF Industries Holdings

Market Cap: US$14.9b

Engages in the manufacture and sale of hydrogen and nitrogen products for energy, fertilizer, emissions abatement, and other industrial activities in North America, Europe, and internationally.

United States Lime & Minerals

Market Cap: US$3.7b

Manufactures and supplies lime and limestone products in the United States.

RPM International

Market Cap: US$15.0b

Provides specialty chemicals for the construction, industrial, specialty, and consumer markets.

Ecolab

Market Cap: US$76.9b

Provides water, hygiene, and infection prevention solutions and services in the United States and internationally.

DRDGOLD

Market Cap: US$2.5b

A gold mining company, engages in the extraction of gold from the retreatment of surface mine tailings in South Africa.

Southern Copper

Market Cap: US$95.0b

Engages in mining, exploring, smelting, and refining copper and other minerals in Peru, Mexico, Argentina, Ecuador, and Chile.

NewMarket

Market Cap: US$7.8b

Through its subsidiaries, primarily engages in the manufacture and sale of petroleum additives.

Mesabi Trust

Market Cap: US$384.0m

A royalty trust, engages in iron ore mining business in the United States.

Smith-Midland

Market Cap: US$190.4m

Smith-Midland Corporation invents, develops, manufactures, markets, leases, licenses, sells, and installs various precast concrete products and systems.