During the six months ending June 30th, 1892, there was passed through the Monongahela locks, seventy millions, nine hundred thousand bushels of coal, the largest amount of coal ever shipped out of the river in a single half year. An idea of the business can be formed by putting it into tons. It would be equal to about 15,000 tons daily, Sundays included, and would require 30 average freight trains to do the business of this one article alone.