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| Needed a standard for trade. Accuracy is not an issue; money exchange for value is the issue and standard specifications.
First corn TW was established in either 1916 or 1918.
Historical Compilation of Changes in the Grain Standards of the United States
Under the United States Grain Standards Act (USGSA) of 1916, the federal government is
authorized to establish official marketing standards (not health and safety standards) for grains
and oilseeds, and to provide procedures for grain inspection and weighing
http://nationalaglawcenter.org/wp-content/uploads/assets/crs/R43803...
https://www.gipsa.usda.gov/fgis/standards/history/standards_history.... (Page 9)
SUBPART D. CORN
Established effective December 1, 1916
Revised effective July 15, 1918
1. Defined corn as shelled corn of the flint or dent varieties.
2. Changed the heading of the grade factor heat-damaged and mahogany kernels to
heat-damaged kernels and raised the allowance for this factor in the six numerical
grades from 0.0, 0.0, 0.0, 0.5, 1, and 3 percent to 0.0, 0.1, 0.3, 0.5, 1.0, and 3.0
percent.
3. Added minimum test weight per bushel of 51, 49, 47, and 44 pounds for the grades
Nos. 3, 4, 5, and 6.
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Historic bushel question.
