This woman is preparing to lift a mixture of grain and chaff and toss it upward. The wind will blow the chaff away and the grain will fall into a pile. This will be repeated many times on the threshing floor to remove the chaff. This is called winnowing.

winnowing; farming; agriculture; grain; harvesting; chaff; wind; threshing; floor; woman; fork; agricultures; grains; winds; floors; women; forks