Great Lakes limestone trade was down slightly in July

August 11, 2025

The Lake Carriers' Association reports that shipments of limestone on the Great Lakes totaled 3.5 million tons in July, a decrease of less than one percent compared to 2024. The trade was below the month's 5-year average by 6.7 percent.

Loadings from U.S. quarries totaled 2.9 million tons, a decrease of one percent compared to a year ago. Shipments from Canadian quarries decreased by less than one percent to 646,418 tons.

Year-to-date the Lakes limestone trade stands at 12.7 million tons, a decrease of five percent compared to a year ago. Loadings from Michigan and Ohio quarries total 10.4 million tons, a decrease of 3.2 percent. Shipments from Ontario quarries total 2.3 million tons, a decrease of 12.6 percent compared to 2024.

Source: Lake Carriers' Association