The railways directly or indirectly employed tens of thousands of engineers, mechanics, repairmen and technicians, as well as statisticians and financial planners. They developed new and more efficient and less expensive techniques. Most important, they created a mindset of how technology could be used in many different forms of business. Railways had a major impact on industrialization. By lowering transportation costs, they reduced costs for all industries moving supplies and finished goods, and they increased demand for the production of all the inputs needed for the railroad system itself. By 1880, there were 13,500 locomotives which each carried 97,800 passengers a year, or 31,500 tons of freight.