The Lakes Carriers' Association reports that limestone shipments in the Great Lakes totaled 1.8 million net tons, a decrease of 21.6% compared to a year ago. Loadings were also below the month’s five-year average by 15.7%.Shipments from U.S. ports totaled 1.5 million tons, a decrease of 18.2%.<p><p>https://www.marinelink.com/news/great-lakes-limestone-trade-down-april-525434</p></p>