The earliest recorded windmills were those used in Persia (present day Iran) in the 7th Century A.D. What for? Grinding corn of course!
The total amount of land used for growing corn in 1991/92 was estimated to be 130.6 million hectacres, production 520 metric tons, of which 97 million metric tons was produced by China from an estimated 21.5 million hectacres.
In 1991 27.9 million hetacres of corn were farmed in the United States, yielding 6.82 metric tons of corn per hectacre, for a total of 189.9 million tons.
The largest container full of popcorn was one with 5,979.33 cu ft of popped corn. It was just over 19 ft 6 in in diameter and 19 ft 1 in in height. It took the staff of United cinemas International in Derby, Great Brita three days to achieve the record, beginning their attempt on August 23, 1991 and completing it on August 26, 1991.
The largest box of popcorn in the United States contained 5,448.16 cu ft of popped corn. It measured 52 ft 7 1/4 in x 10 ft 1 1/2 in and was filled by Stanly Community College, Albermarle, NC from August 6-8, 1991. The average depth was 10 ft 2 1/2 in.