Logging, farming and railroads were mainstays of Minnesota's early economy. The sawmills at Saint Anthony Falls and logging centers of Pine City, Marine on St. Croix, Stillwater, and Winona processed vast quantities of timber. These cities were on rivers that were ideal for transportation. St. Anthony Falls was later tapped to provide power for flour mills. Innovations by Minneapolis millers led to the production of Minnesota "patent" flour, which commanded almost double the price of "bakers'" or "clear" flour, which it replaced. By 1900 Minnesota mills, led by Pillsbury, Northwestern and the Washburn-Crosby Company (a forerunner of General Mills), were grinding 14.1% of the nation's grain.