Shipments of limestone on the Great Lakes totaled 28. ... ship ownership is a key indicator of economic influence and global commerce. Marine Jet Power (MJP), a global leader in waterjet ...

Limestone, made from calcium carbonate, takes millions of years to form. These sedimentary rocks are born from the decay and ...

Shipments of limestone on the Great Lakes totaled 28.3 million tons in 2024, a decrease of 3.9 percent compared to 2023. 2024’s loadings were below the trade’s 5-year average by 2.9 percent.