It is the carrier of a heavy tonnage of coal to Pittsburg, Pennsylvania.
The tonnage of the shipping entering and clearing the ports of the province in 1905 was 1,756,866, of which 352,992 was foreign.
==Shipping== Although Argentina has an extensive coast-line, and one of the great fluvial systems of the world, the tonnage of steamers and sailing vessels flying her flag is comparatively small.
In 1898 the list comprised only 1416 sailing vessels of all classes, from Io tons up, with a total tonnage of 118,894 tons, and 222 steamships, of 36,323 tons.
In 1902 the number of men employed in the home fisheries was 144,000 and the number of vessels 25,481 (tonnage 127,000); in the deep-sea fisheries 10,500 men and 450 vessels (tonnage 51,000) were employed.