How much does a social worker make? According to the May 2012 records from the Bureau of Labor Statistics, the mean annual healthcare social worker salary is $51,460, or $24.74 per hour. The lowest ten percent earn $31,410, while the top ten percent make an average of $74,030 annually.
The Leibniz Step Reckoner. Gottfried Leibnizâs 1673 âStep Reckonerâ introduced a design innovation that enabled a single gear to represent any digit from 0 to 9 in just one revolution. This stepped-drum approach dominated calculator design for the next two centuries. Gottfried Leibniz.
The Steamship William G. Mather is a retired Great Lakes bulk freighter now restored as a museum ship in Cleveland, Ohio, one of four in the Great Lakes region. She transported cargo such as ore, coal, stone, and grain to ports throughout the Great Lakes, and was nicknamed The Ship That Built Cleveland because Cleveland's steel mills were a frequent destination. Note: from 1905 till 1925 the Cleveland-Cliffs Iron Company had another vessel named S.S. William G. Mather in their fleet, also buil