In 1935, when the Industrial Minerals Division was chartered, the world was six years into the Great Depression. It was a time when thousands upon thousands of Americans were out of work. Aggregate production, which had plunged 36 percent since its 1929 high of 314 Mt/a (345 million stpy), was just beginning to show a weak recovery. It would be four more years before aggregate production was back to its level before the Depression.
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