NOTES
| Title | Release Dates | |
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|
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| Iron Ore Production, Lake Superior Ore, Total for Lake Superior | 2005-08-01 | 2005-08-01 |
| Source | ||
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| National Bureau of Economic Research | 2005-08-01 | 2005-08-01 |
| Release | ||
|
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| NBER Macrohistory Database | 2005-08-01 | 2005-08-01 |
| Units | ||
|
|
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| Millions of Long Tons | 2005-08-01 | 2005-08-01 |
| Frequency | ||
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| Annual | 2005-08-01 | 2005-08-01 |
| Seasonal Adjustment | ||
|
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| Not Seasonally Adjusted | 2005-08-01 | 2005-08-01 |
| Notes | ||
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|
Series Is Presented Here As Two Variables--(1)--Original Data, 1889-1915 (2)--Original Data, 1911-1939. Data Exclude Iron Ridge Area (Southern Wisconsin). Source: U.S. Bureau Of The Mines, Mineral Resources, 1914, Part 1, Pp. 496-497. This NBER data series a01193a appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html. NBER Indicator: a01193a |
2005-08-01 | 2005-08-01 |
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