Great Lakes Limestone Trade Up 10.4% in September

Shipments of limestone on the Great Lakes totaled 3.7 million tons in September, an increase of 10.4% compared to a year ago.  Limestone cargos were above the month’s five-year average by 5.2%.

Loadings from U.S. quarries totaled 3 million tons, an increase of 12.2% from 2020. Shipments from Canadian quarries totaled 684,234 tons, an increase of 8.3%.

Year-to-date the limestone trade stands at 21 million tons, an increase of 9.1% compared to a year ago. Loadings from Michigan and Ohio quarries total 16.5 million tons, an increase of 7.5%. Shipments from Ontario quarries total 4.6 million tons, an increase of 15.5%.

Since 1880, Lake Carriers’ Association has represented the U.S.-flag Great Lakes fleet, which today can move more than 90 million tons of cargos annually that are the foundation of American industry, infrastructure, and power: iron ore, stone, coal, cement, and other dry bulk materials such as grain, salt, and sand. More information is available at

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