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Relative Importance Weights: Mining: Iron Ore Mining (NAICS = 21221) (RIWN21221S)

Observations

May 2026: 0.0630
Updated: Sep 18, 2026 8:19 AM CDT
May 2026:  0.0630  
Apr 2026:  0.0529  
Mar 2026:  0.0552  
Feb 2026:  0.0564  
Jan 2026:  0.0580  

Units:

Percent,
Seasonally Adjusted

Frequency:

Monthly

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Notes

Title Release Dates
Relative Importance Weight (Contribution to the total industrial production index): Iron ore mining 2015-02-18 2020-09-21
Relative Importance Weights: Mining: Iron Ore Mining (NAICS = 21221) 2020-09-22 2026-09-18
 
Source    
Board of Governors of the Federal Reserve System (US) 2015-02-18 2026-09-18
 
Release    
G.17 Industrial Production and Capacity Utilization 2015-02-18 2026-09-18
 
Units    
Percent 2015-02-18 2026-09-18
 
Frequency    
Monthly 2015-02-18 2026-09-18
 
Seasonal Adjustment    
Seasonally Adjusted 2015-02-18 2026-09-18
 
Notes    
The IP proportions (typically shown in the first column of the relevant tables in the G.17 release) are estimates of the industries' relative contributions to overall growth in the following year. For example, the relative importance weight of the motor vehicles and parts industry is about 6 percent. If output in this industry increased 10 percent in a month, then this gain would boost growth in total IP by 6/10 percentage point (0.06 x 10% = 0.6%).

NAICS = 21221

Source Code: RIW.N21221.S

2015-02-18 2020-09-21
The Industrial Production (IP) proportions (typically shown in the first column of the relevant tables in the G.17 release) are estimates of the industries' relative contributions to overall growth in the following year. For example, the relative importance weight of the motor vehicles and parts industry is about 6 percent. If output in this industry increased 10 percent in a month, then this gain would boost growth in total IP by 6/10 percentage point (0.06 x 10% = 0.6%).

For more information, see the explanatory notes (https://www.federalreserve.gov/releases/g17/About.htm) issued by the Board of Governors. For recent updates, see the announcements (https://www.federalreserve.gov/feeds/g17.html) issued by the Board of Governors

NAICS: 21221

Source Code: RIW.N21221.S

2020-09-22 2024-07-16
explanatory notes (https://www.federalreserve.gov/releases/g17/About.htm) issued by the Board of Governors. For recent updates, see the announcements (https://www.federalreserve.gov/feeds/g17.html) issued by the Board of Governors.



 2024-07-17 2026-09-18

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Ore Iron Contributions Mining G.17 Industr. Production & Capacity Utilization Industrial Production Production Board of Governors Industry Indexes Seasonally Adjusted Monthly Nation Public Domain: Citation Requested United States of America