"A slice of bread contains a bit less than three-fourths of an ounce of flour.
If each of America's 20,000,000 homes (112,000,000 homes today) wastes one slice per day, the country is throwing away daily over
14,000,000 ounces of flour (78,000,000 ounces now) —over 875,000 pounds (4,900,000 pounds), or enough flour for over a
million one-pound loaves a day (5.6 million loaves now). For a full year at this rate there would be a
waste of over 319,000,000 pounds of flour (1,786,400,000 pounds) —1,500,000 barrels (8,400,000 barrels)—enough flour
to make 365,000,000 loaves (2,044,000,000).
As it takes four and one-half bushels of wheat to make a barrel of ordinary
flour, this waste would represent the flour from over 7,000,000 bushels (39,200,000 bushels) of
wheat. Fourteen and nine-tenths bushels of wheat on the average are raised per
acre. It would take the product of some 470,000 acres (2,632,000 acres) just to provide a single
slice of bread to be wasted daily in every home."
Average yield-per-acre has increased to about 50 bushels today, largely due to agricultural methods that are unsustainable in the long run. Nevertheless, it would still "take the product" of some 784,000 acres "just to provide a single slice of bread to be wasted daily" in every American home.
When something as unimportant as a slice of bread is multiplied by our enormous population, it staggers the imagination.