Shipments of limestone on the Great Lakes totaled 3.3 million tons in September, a decrease of 11.5% compared to 2024. Limestone cargos were also below the month’s five-year average by 6%.Loadings from U.S. quarries decreased 13.5% from last year to 2.7 million tons.<p><p>https://www.marinelink.com/news/lakes-limestone-trade-down-september-530696</p></p>