Chemical Manufacturing
SmartSectors

The mining sector includes operations engaged in extracting and preparing coal and metals (iron ore, copper, etc.) from the earth.

Use the checkboxes below to select an environmental performance indicator and an economic indicator.

Environmental Performance Indicators







Economic Indicators



What is in this chart?

This chart shows total air emissions, as reported annually to EPA’s Toxics Release Inventory (TRI) between 1998 and 2020, by establishments classified into NAICS 2121 (coal mining). Total air emissions for this sector decreased from 2.17 million pounds in 1998 to 0.12 million pounds in 2020.

What are TRI air emissions?

Total air emissions reported to TRI include fugitive air emissions and stack air emissions. Fugitive air emissions are all releases to air that do not occur through a confined air stream; such emissions may include equipment leaks, releases from building ventilation systems, and evaporative losses from surface impoundments and spills. Stack air emissions are releases to air that occur through a confined air stream, such as stacks, ducts, or pipes.

The quantity of releases does not indicate the level of health risk posed by the emissions. TRI data can vary from year to year at the facility and sector levels for a variety of reasons. For questions about specific values, contact TRI. In addition to TRI reporting, coal mining businesses are subject to statutory and regulatory requirements, including permitting.

Select an Economic Indicator Click to View Totals

What is in this chart?

This chart shows total air emissions, as reported annually to EPA’s Toxics Release Inventory (TRI) between 1998 and 2018, by establishments classified into NAICS 2122 (metal ore mining). Total air emissions for this sector decreased from 4.9 million pounds in 1998 to 1.52 million pounds in 2020.

What are TRI air emissions?

Total air emissions reported to TRI include fugitive air emissions and stack air emissions. Fugitive air emissions are all releases to air that do not occur through a confined air stream; such emissions may include equipment leaks, releases from building ventilation systems, and evaporative losses from surface impoundments and spills. Stack air emissions are releases to air that occur through a confined air stream, such as stacks, ducts, or pipes.

The quantity of releases does not indicate the level of health risk posed by the emissions. TRI data can vary from year to year at the facility and sector levels for a variety of reasons. For questions about specific values, contact TRI. In addition to TRI reporting, coal mining businesses are subject to statutory and regulatory requirements, including permitting.

Use the checkboxes below to select an environmental performance and an economic indicator.

Environmental Performance Indicators







Economic Indicators



What is in this chart?

This chart shows total air emissions, as reported annually to EPA’s Toxics Release Inventory (TRI) between 1998 and 2017, by establishments classified into NAICS 2122 (metal ore mining). Total air emissions for this sector decreased from 6.2 million pounds in 1998 to 2.4 million pounds in 2017.

What are TRI air emissions?

Total air emissions reported to TRI include fugitive air emissions and point source air emissions. Fugitive air emissions are all releases to air that do not occur through a confined air stream; such emissions may include equipment leaks, releases from building ventilation systems, and evaporative losses from surface impoundments and spills. Point source air emissions, also called stack emissions, are releases to air that occur through a confined air stream, such as stacks, ducts, or pipes.

The quantity of releases does not indicate the level of health risk posed by the emissions. TRI data can vary from year to year at the facility and sector levels for a variety of reasons. For questions about specific values, contact TRI. In addition to TRI reporting, metal ore mining operations are subject to statutory and regulatory requirements, including permitting.

Select an Economic Indicator Click to View Totals

What is in this chart?

This chart shows total air emissions, as reported annually to EPA’s Toxics Release Inventory (TRI) between 1998 and 2017, by establishments classified into NAICS 2122 (metal ore mining). Total air emissions for this sector decreased from 6.2 million pounds in 1998 to 2.4 million pounds in 2017.

What are TRI air emissions?

Total air emissions reported to TRI include fugitive air emissions and point source air emissions. Fugitive air emissions are all releases to air that do not occur through a confined air stream; such emissions may include equipment leaks, releases from building ventilation systems, and evaporative losses from surface impoundments and spills. Point source air emissions, also called stack emissions, are releases to air that occur through a confined air stream, such as stacks, ducts, or pipes.

The quantity of releases does not indicate the level of health risk posed by the emissions. TRI data can vary from year to year at the facility and sector levels for a variety of reasons. For questions about specific values, contact TRI. In addition to TRI reporting, metal ore mining operations are subject to statutory and regulatory requirements, including permitting.

Select Sub-sector:

The mining sector includes operations engaged in:

  • Coal mining, extraction and material preparation (beneficiating). (NAICS 2121)
  • Metal ore mining, extraction and material preparation (beneficiating). (NAICS 2122)

Nonmetallic mineral mining and quarrying for rocks, sand, clays and other materials (NAICS 2123) are part of the broader mining sector, but not included in this Sector Snapshot.

Data presented in the Snapshot cover coal (NAICS 2121) or metal ore (NAICS 2122) mining depending on the selection. The number of facilities reporting data for the most recent year represented in the Snapshot charts for each indicator are shown below:

Indicator EPA Program Facilities Reporting
Air Emission Toxic Release Inventory 19 (coal) 83 (metals)
Criteria air pollutants National Emission Inventory 88 (coal)* 70 (metals)*
Greenhouse gases Inventory of Greenhouse Gas Emissions & Sinks Not available
Hazardous waste National Biannual Report 2 (coal) 43 (metals)
Production-related waste managed Toxic Release Inventory 22 (coal) 90 (metals)
Recycling of waste chemicals Toxic Release Inventory 13 (metals)
Releases to land Toxic Release Inventory 20 (coal) 80 (metals)
Water discharges Toxic Release Inventory 2 (coal) 31 (metals)

* Includes facilities reporting 0 to less than 1 ton of emissions.
NOTE: Variation in facilities counts between indicators reflects differences in reporting requirements. For more information, click on the program links in the chart description.

The Smart Sectors Mining Sector Information page has more details on the industry and related EPA programs.

Air Emissions

How to Download Your Data
  1. Go to https://www.epa.gov/enviro/tri-ez-search.
  2. Scroll down and click on “Flat (Denormalized) Form R – A flat view of the TRI database that contains a majority of the available TRI information.
  3. Select the following variables from the list of data elements provided.
    1. Reporting Year
    2. In the row immediately below Air Total Release check the box above SUM
    3. Primary NAICS Code
  4. Scroll to the bottom of the page and click on “STEP 3: Enter Search Criteria”
  5. On the next page:
    1. For Reporting Year – switch Operator Definition to “Between.” In the Search Value field, enter the first year shown in the Sector Snapshots chart, followed by “AND”, and the last year shown in the Sector Snapshots chart. For example, if the first year is 1996 and the last year is 2022, enter “1996 AND 2022” in the Search Value field. In the Sort Column field, enter “1.” (You can leave the other columns blank or unchanged.)
    2. For Primary NAICS Code – switch Operator to “Beginning with,” and enter 2121 (Coal Mining) under Search Value. Then check the last box to the right under “Where Only.”
    3. Click on “Search database” or “Output to CSV File”
X

Criteria air pollutants

How to Download Your Data

Note: The data are available in a tab or comma-delimited text format that must be imported into a program that will allow you to analyze the file (such as Excel).

  1. Go to: Get Air Emissions Data | US EPA which has a table with yearly data tables. Download the data years desired.
  2. In the “Table of Air Emissions Data by Year and Time”, select the relevant NEI file under the Triennial NEI column for years within the range of the Snapshot Sectors Graphic.
  3. For 1996 – 2005, select the file with “naics” or “sics” in the file name. For example, for 2000, use the “2000sicsummarymade09” file, but for 2005, use the “naics_summary.zip” file.
  4. For 2008 and onwards, click the “Data Summaries” hyperlink, then download the “Facility-level by Pollutant” file.
  5. Coal mining facilities are grouped under NAICS codes beginning with 2121 for the years 2002 onwards. To identify the SIC codes corresponding to NAICS 2121 for the 1996 and 1999 datasets, use the following crosswalk: https://www.naics.com/sic-naics-crosswalk-search-results/
  6. Using the SIC and NAICS codes, filter for paper products facilities, then sum total emissions of CO, NOX, VOC, PM10, NH3, and SO2 in each year to arrive at the totals shown in this chart.
X

Greenhouse Gases

How to Download Your Data
  1. Go to Greenhouse Gas (GHG) Emissions and Removals | US EPA.
  2. Under “National” select the “EPA's Inventory of U.S. Greenhouse Gas Emissions and Sinks”, then select “Annual Report”
  3. In the table presented, navigate to the “Related Data Files” column.
  4. Click into the folder “Chapter Text,” then open the folder “Chapter 3 – Energy”
  5. The file “Table 3-30.csv” contains GHG emissions from Coal Mining. The values in this chart are represented by the “Total” row.
X

Energy Use

How to Download Your Data
  1. Go to https://www.eia.gov/outlooks/aeo/archive.php
  2. This will bring you to the Annual Energy Outlook (AEO) Products – Archive which contains links to historical data sets.
  3. Under “Supplement Tables,” click on the HTML link for data by year. For each year shown in the Snapshot, users should select the AEO report published the following year for data. For example, for energy use data from 2020, the user should use the 2020 data published in the 2021 Annual Energy Outlook.
  4. Go to Table 34. Nonmanufacturing Sector Energy Consumption and click on the XLS option.
  5. For each year, copy the value for “Total” under “Energy Consumption”
  6. For other years, it will be necessary to repeat the process above.
X

Hazardous Waste Generation

How to Download Your Data
  1. Go to https://rcrainfo.epa.gov/rcrainfoweb/action/modules/br/naics/view
  2. For each reporting cycle, sum the output across all NAICS codes to calculate the total shown in this chart for the year corresponding to that reporting cycle by using the following criteria:
    1. NAICS code: 2121 COAL MINING
    2. Reporting cycles: Select each year individually that is presented on the Sector Snapshots graphic
    3. You do not need to change the “Generators to Include” dropdown or the “Location” dropdown before hitting submit.
X

Production-Related Waste Managed

How to Download Your Data
  1. Go to https://www.epa.gov/enviro/tri-ez-search.
  2. Scroll down and click on “Flat (Denormalized) Form R – A flat view of the TRI database that contains a majority of the available TRI information.
  3. Select the following variables from the list of data elements provided.
    1. Reporting Year
    2. In the row immediately below Total Production Related Waste check the box above SUM
    3. Primary NAICS Code
  4. Scroll to the bottom of the page and click on “STEP 3: Enter Search Criteria”
  5. On the next page:
    1. For Reporting Year – switch Operator Definition to “Between.” In the Search Value field, enter the first year shown in the Sector Snapshots chart, followed by “AND”, and the last year shown in the Sector Snapshots chart. For example, if the first year is 1996 and the last year is 2022, enter “1996 AND 2022” in the Search Value field.
    2. For Primary NAICS Code – switch Operator to “Beginning with,” and enter 2121 (Coal Mining) under Search Value. Then check the last box to the right under “Where Only.”
    3. Click on “Search database” or “Output to CSV File”
X

Recycling of Waste Chemicals

How to Download Your Data
  1. Go to https://www.epa.gov/enviro/tri-ez-search
  2. Scroll down and click on “Flat (Denormalized) Form R – A flat view of the TRI database that contains a majority of the available TRI information.
  3. Select the following variables from the list of data elements provided.
    1. Reporting Year
    2. In the row immediately below Recycling Onsite Current Year Quantity check the box above SUM
    3. Primary NAICS Code
  4. Scroll to the bottom of the page and click on “STEP 3: Enter Search Criteria”
  5. On the next page:
    1. For Reporting Year – switch Operator Definition to “Between.” In the Search Value field, enter the first year shown in the Sector Snapshots chart, followed by “AND”, and the last year shown in the Sector Snapshots chart. For example, if the first year is 1996 and the last year is 2022, enter “1996 AND 2022” in the Search Value field.
    2. For Primary NAICS Code – switch Operator to “Beginning with,” and enter 2121 (Coal Mining) under Search Value. Then check the last box to the right under “Where Only.”
    3. Click on “Search database” or “Output to CSV File”
X

Releases to Land

How to Download Your Data
  1. Go to https://www.epa.gov/enviro/tri-ez-search.
  2. Scroll down and click on “Flat (Denormalized) Form R – A flat view of the TRI database that contains a majority of the available TRI information.
  3. Select the following variables from the list of data elements provided.
    • Reporting Year
    • In the row immediately below Land Total Release check the box above SUM
    • Primary NAICS Code
  4. Scroll to the bottom of the page and click on “STEP 3: Enter Search Criteria”
  5. On the next page::
    1. For Reporting Year – switch Operator Definition to “Between.” In the Search Value field, enter the first year shown in the Sector Snapshots chart, followed by “AND”, and the last year shown in the Sector Snapshots chart. For example, if the first year is 1996 and the last year is 2022, enter “1996 AND 2022” in the Search Value field.
    2. For Primary NAICS Code – switch Operator to “Beginning with,” and enter 2121 (Coal Mining) under Search Value. Then check the last box to the right under “Where Only.”
    3. Click on “Search database” or “Output to CSV File”
X

Water Discharges

How to Download Your Data
  1. Go to https://www.epa.gov/enviro/tri-ez-search.
  2. Scroll down and click on “Flat (Denormalized) Form R – A flat view of the TRI database that contains a majority of the available TRI information.
  3. Select the following variables from the list of data elements provided.
    • Reporting Year
    • In the row immediately below Water Total Release check the box above SUM
    • Primary NAICS Code
  4. Scroll to the bottom of the page and click on “STEP 3: Enter Search Criteria”
  5. On the next page:
    1. For Reporting Year – switch Operator Definition to “Between.” In the Search Value field, enter the first year shown in the Sector Snapshots chart, followed by “AND”, and the last year shown in the Sector Snapshots chart. For example, if the first year is 1996 and the last year is 2022, enter “1996 AND 2022” in the Search Value field.
    2. For Primary NAICS Code – switch Operator to “Beginning with,” and enter 2121 (Coal Mining) under Search Value. Then check the last box to the right under “Where Only.”
    3. Click on “Search database” or “Output to CSV File”
X

Air Emissions

How to Download Your Data
  1. Go to https://www.epa.gov/enviro/tri-ez-search.
  2. Scroll down and click on “Flat (Denormalized) Form R – A flat view of the TRI database that contains a majority of the available TRI information.
  3. Select the following variables from the list of data elements provided.
    1. Reporting Year
    2. In the row immediately below Air Total Release check the box above SUM
    3. Primary NAICS Code
  4. Scroll to the bottom of the page and click on “STEP 3: Enter Search Criteria”
  5. On the next page:
    1. For Reporting Year – switch Operator Definition to “Between.” In the Search Value field, enter the first year shown in the Sector Snapshots chart, followed by “AND”, and the last year shown in the Sector Snapshots chart. For example, if the first year is 1996 and the last year is 2022, enter “1996 AND 2022” in the Search Value field. In the Sort Column field, enter “1.” (You can leave the other columns blank or unchanged.)
    2. For Primary NAICS Code – switch Operator to “Beginning with,” and enter 2122 (Metal Ore Mining) under Search Value. Then check the last box to the right under “Where Only.”
    3. Click on “Search database” or “Output to CSV File”
X

Criteria Air Pollutants

How to Download Your Data

Note: The data are available in a tab or comma-delimited text format that must be imported into a program that will allow you to analyze the file (such as Excel).

  1. Go to: Get Air Emissions Data | US EPA which has a table with yearly data tables. Download the data years desired.
  2. In the “Table of Air Emissions Data by Year and Time”, select the relevant NEI file under the Triennial NEI column for years within the range of the Snapshot Sectors Graphic.
  3. For 1996 – 2005, select the file with “naics” or “sics” in the file name. For example, for 2000, use the “2000sicsummarymade09” file, but for 2005, use the “naics_summary.zip” file.
  4. For 2008 and onwards, click the “Data Summaries” hyperlink, then download the “Facility-level by Pollutant” file.
  5. Metal mining facilities are grouped under NAICS codes beginning with 2122 for the years 2002 onwards. To identify the SIC codes corresponding to NAICS 2122 for the 1996 and 1999 datasets, use the following crosswalk: https://www.naics.com/sic-naics-crosswalk-search-results/
  6. Using the SIC and NAICS codes, filter for metal products facilities, then sum total emissions of CO, NOX, VOC, PM10, NH3, and SO2 in each year to arrive at the totals shown in this chart.
X

Greenhouse Gases

How to Download Your Data
  1. Go to Greenhouse Gas (GHG) Emissions and Removals | US EPA.
  2. Under “National” select the “EPA's Inventory of U.S. Greenhouse Gas Emissions and Sinks”, then select “Annual Report”
  3. In the table presented, navigate to the “Related Data Files” column.
  4. Click into the folder “Chapter Text,” then open the folder “Chapter 3 – Energy”
  5. The file “Table 3-30.csv” contains GHG emissions from Coal Mining. The values in this chart are represented by the “Total” row
X

Energy Use

How to Download Your Data
  1. Go to https://www.eia.gov/outlooks/aeo/archive.php
  2. This will bring you to the Annual Energy Outlook (AEO) Products – Archive which contains links to historical data sets.
  3. Under “Supplement Tables,” click on the HTML link for data by year. For each year shown in the Snapshot, users should select the AEO report published the following year for data. For example, for energy use data from 2020, the user should use the 2020 data published in the 2021 Annual Energy Outlook.
  4. Go to Table 34. Nonmanufacturing Sector Energy Consumption and click on the XLS option.
  5. For each year, copy the value for “Total” under “Mining”
  6. For other years, it will be necessary to repeat the process above.
X

Hazardous Waste Generation

How to Download Your Data
  1. Go to https://rcrainfo.epa.gov/rcrainfoweb/action/modules/br/naics/view
  2. For each reporting cycle, sum the output across all NAICS codes to calculate the total shown in this chart for the year corresponding to that reporting cycle by using the following criteria:
    1. NAICS code: 2122 METAL ORE MINING
    2. Reporting cycles: Select each year individually that is presented on the Sector Snapshots graphic
    3. You do not need to change the “Generators to Include” dropdown or the “Location” dropdown before hitting submit.
X

Production-Related Waste Managed

How to Download Your Data
  1. Go to https://www.epa.gov/enviro/tri-ez-search.
  2. Scroll down and click on “Flat (Denormalized) Form R – A flat view of the TRI database that contains a majority of the available TRI information.
  3. Select the following variables from the list of data elements provided.
    1. Reporting Year
    2. In the row immediately below Total Production Related Waste check the box above SUM
    3. Primary NAICS Code
  4. Scroll to the bottom of the page and click on “STEP 3: Enter Search Criteria”
  5. On the next page:
    1. For Reporting Year – switch Operator Definition to “Between.” In the Search Value field, enter the first year shown in the Sector Snapshots chart, followed by “AND”, and the last year shown in the Sector Snapshots chart. For example, if the first year is 1996 and the last year is 2022, enter “1996 AND 2022” in the Search Value field.
    2. For Primary NAICS Code – switch Operator to “Beginning with,” and enter 2122 (Metal Ore Mining) under Search Value. Then check the last box to the right under “Where Only.”
    3. Click on “Search database” or “Output to CSV File”
X

Recycling of Waste Chemicals

How to Download Your Data
  1. Go to https://www.epa.gov/enviro/tri-ez-search
  2. Scroll down and click on “Flat (Denormalized) Form R – A flat view of the TRI database that contains a majority of the available TRI information.
  3. Select the following variables from the list of data elements provided.
    1. Reporting Year
    2. In the row immediately below Recycling Onsite Current Year Quantity check the box above SUM
    3. Primary NAICS Code
  4. Scroll to the bottom of the page and click on “STEP 3: Enter Search Criteria”
  5. On the next page:
    1. For Reporting Year – switch Operator Definition to “Between.” In the Search Value field, enter the first year shown in the Sector Snapshots chart, followed by “AND”, and the last year shown in the Sector Snapshots chart. For example, if the first year is 1996 and the last year is 2022, enter “1996 AND 2022” in the Search Value field.
    2. For Primary NAICS Code – switch Operator to “Beginning with,” and enter 2122 (Metal Ore Mining) under Search Value. Then check the last box to the right under “Where Only.”
    3. Click on “Search database” or “Output to CSV File”
X

Releases to Land

How to Download Your Data
  1. Go to https://www.epa.gov/enviro/tri-ez-search.
  2. Scroll down and click on “Flat (Denormalized) Form R – A flat view of the TRI database that contains a majority of the available TRI information.
  3. Select the following variables from the list of data elements provided.
    • Reporting Year
    • In the row immediately below Land Total Release check the box above SUM
    • Primary NAICS Code
  4. Scroll to the bottom of the page and click on “STEP 3: Enter Search Criteria”
  5. On the next page::
    1. For Reporting Year – switch Operator Definition to “Between.” In the Search Value field, enter the first year shown in the Sector Snapshots chart, followed by “AND”, and the last year shown in the Sector Snapshots chart. For example, if the first year is 1996 and the last year is 2022, enter “1996 AND 2022” in the Search Value field.
    2. For Primary NAICS Code – switch Operator to “Beginning with,” and enter 2122 (Metal Ore Mining) under Search Value. Then check the last box to the right under “Where Only.”
    3. Click on “Search database” or “Output to CSV File”
X

Water Discharges

How to Download Your Data
  1. Go to https://www.epa.gov/enviro/tri-ez-search.
  2. Scroll down and click on “Flat (Denormalized) Form R – A flat view of the TRI database that contains a majority of the available TRI information.
  3. Select the following variables from the list of data elements provided.
    • Reporting Year
    • In the row immediately below Water Total Release check the box above SUM
    • Primary NAICS Code
  4. Scroll to the bottom of the page and click on “STEP 3: Enter Search Criteria”
  5. On the next page:
    1. For Reporting Year – switch Operator Definition to “Between.” In the Search Value field, enter the first year shown in the Sector Snapshots chart, followed by “AND”, and the last year shown in the Sector Snapshots chart. For example, if the first year is 1996 and the last year is 2022, enter “1996 AND 2022” in the Search Value field.
    2. For Primary NAICS Code – switch Operator to “Beginning with,” and enter 2122 (Metal Ore Mining) under Search Value. Then check the last box to the right under “Where Only.”
    3. Click on “Search database” or “Output to CSV File”
X

Dollar Value of Gross Output

How to Download Your Data
  1. Go to GDP by Industry | U.S. Bureau of Economic Analysis (BEA)
  2. Click on Underlying Detail Tables, Annual, 1997-2022
  3. Select “Gross Output by Industry.”
  4. Select “U.Gross Output by Industry (A)” in the drop-down menu
  5. After the table has loaded, click on “Modify” in the upper-right-hand corner of the table. In the resulting window:
    1. Set the scale as “Billions”
    2. Set the start year as “1997-A”
    3. Click “Download” and choose your preferred download format.
    4. Click “Refresh Table”
  6. The first row of the resulting table, labeled “Motor vehicles, bodies and trailers, and parts” provides the corresponding data shown in this chart for each year.
  7. Line 15 of the resulting table (Coal mining) contains the values shown in this chart.
X

Employment

How to Download Your Data

Note: The data are available in a comma-delimited text format that must be imported into a software package that will allow you to analyze the file.

  1. Go to https://www.census.gov/programs-surveys/cbp/data/datasets.html
  2. Click on any link labeled “County Business Patterns: YEAR.” On the resulting page, click the “Complete U.S. File” link and download the corresponding file. Repeat this process for each year corresponding to years presented in the graphic.
  3. Open each file in a software package of your choice that can process comma-delimited text files. Repeat the steps below for each file.
  4. For entities with suppressed data, the Census Bureau replaces all employment values with zeroes, and this underestimates the total number of employees in each sector. Using your software package, replace the suppression flags with the midpoint of the Data Suppression Flag employment ranges per the table below.
    Empflag Data Suppression Flag Employment Size Class Midpoint
    Min Max
    A 0 19 10
    B 20 99 60
    C 100 249 175
    E 250 499 375
    F 500 999 750
    G 1000 2,499 1,750
    H 2,500 4,999 3,750
    I 5000 9,999 7,500
    J 10,000 24,999 17,500
    K 25,000 49,999 37,500
    L 50,000 99,999 75,000
    M 100,000 >100,000 100,000
  5. In your software package, filter the data for NAICS codes that begin with 2121.
  6. With the filter in place, aggregate the “emp” column across all records.
X

Production

How to Download Your Data
  1. Go to https://www.eia.gov/coal/annual/
  2. Under “Data tables” on the right-hand side of the screen, download “Table ES-1. Coal Production” in your preferred file format (PDF or XLS).
  3. The “Total” column contains the values shown in this chart.
X

Dollar Value of Gross Output

How to Download Your Data
  1. Go to Go to GDP by Industry | U.S. Bureau of Economic Analysis (BEA)
  2. Click on Underlying Detail Tables, Annual, 1997-2022
  3. Select “Gross Output by Industry.”
  4. Select “U.Gross Output by Industry (A),” in the drop-down menu
  5. Click the “Next Step” button. The resulting data table will then load.
  6. Select “Modify” in the upper-right-hand corner of the table. In the resulting window:
    1. Set the scale as “Billions”
    2. Set the start year as “1997-A”
    3. Set the start year as “Most Recent”
    4. Set the end year as the last year presented in the graphic.
  7. Click “Download” and choose your preferred download format.
  8. Sum the values in line 16 (Copper, nickel, lead, and zinc mining) and line 17 (Iron, gold, silver, and other metal ore mining) to calculate the values shown in this chart.
X

Employment

How to Download Your Data

Note: The data are available in a comma-delimited text format that must be imported into a software package that will allow you to analyze the file.

  1. Go to https://www.census.gov/programs-surveys/cbp/data/datasets.html
  2. Click on any link labeled “County Business Patterns: YEAR.” On the resulting page, click the “Complete U.S. File” link and download the corresponding file. Repeat this process for each year corresponding to years presented in the graphic.
  3. Open each file in a software package of your choice that can process comma-delimited text files. Repeat the steps below for each file.
  4. For entities with suppressed data, the Census Bureau replaces all employment values with zeroes, and this underestimates the total number of employees in each sector. Using your software package, replace the suppression flags with the midpoint of the Data Suppression Flag employment ranges per the table below.
    Empflag Data Suppression Flag Employment Size Class Midpoint
    Min Max
    A 0 19 10
    B 20 99 60
    C 100 249 175
    E 250 499 375
    F 500 999 750
    G 1000 2,499 1,750
    H 2,500 4,999 3,750
    I 5000 9,999 7,500
    J 10,000 24,999 17,500
    K 25,000 49,999 37,500
    L 50,000 99,999 75,000
    M 100,000 >100,000 100,000
  5. In your software package, filter the data for NAICS codes that begin with 2121.
  6. With the filter in place, aggregate the “emp” column across all records.
X