Lhoist Group
HQ BE20% share
World's largest lime producer (family-owned); lime, dolomite and high-purity limestone for glass, steel and environmental uses.
mineral · input
Limestone and Dolomite
Calcium carbonate (limestone) and calcium-magnesium carbonate (dolomite) added to glass batch to provide CaO and MgO for chemical durability and thermal expansion control. Widely available; limited concentration risk. Limestone provides ~7–10% of glass batch weight.
9
Source countries
6
Companies
1
Goods affected
0
Claims on record
What depends on it
Goods that need this input
1 essential American goods rely on limestone and dolomite somewhere upstream in their supply chain.
Who makes it
Supplier companies
6 companies produce limestone and dolomite.
Carmeuse Group
HQ BE14% share
Belgian family-owned global lime & limestone producer; high-calcium and dolomitic limestone for glass, steel, flue-gas and construction.
Graymont Limited
HQ CA8% share
Canadian lime & limestone producer (North America/Asia-Pacific); high-calcium and dolomitic products.
United States Lime & Minerals, Inc.(USLM)
HQ US6% share
U.S. producer of lime and limestone products (high-calcium, dolomitic) for construction, industrial and environmental markets.
Martin Marietta Materials(MLM)
HQ US
US's second-largest crushed stone and aggregate producer; major supplier of limestone, granite, and sand/gravel for road paving and construction across eastern and central US
Vulcan Materials(VMC)
HQ US
US's largest construction aggregates company (NYSE; not a cement producer). Operates limestone, granite, and other crushed stone quarries across the US. Operated a major limestone quarry in Quintana Roo, Mexico through subsidiary Sac Tun for 30+ years — shipping 62,000-tonne loads of crushed limestone by self-discharging vessels to Tampa, New Orleans, Houston, and Brownsville. This quarry and port terminal were physically seized by the Mexican government in 2022-2023 in a USMCA-contested expropriation, cutting off a major seaborne limestone supply route to the US Gulf Coast.