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Oct 27, 2026Visualization

Critical Supply Lines

See how much the United States relied on imports for critical minerals in 2025 and which countries supplied them.

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How to use this project

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How to explore

Power lines, fertilizer, phones, vehicles, tools, and many other products depend on materials that are mined or processed somewhere. This page follows materials on the final 2025 U.S. critical minerals list.

  1. Start with aluminum

    Read its 2025 net import reliance, then choose another material from the board.

  2. Follow five years

    Move the year control to see whether the selected material's reliance rose or fell from 2021 to 2025.

  3. Trace U.S. imports

    Select a named source country in the 2021–2024 import shares.

  4. Check world production

    Look for the same country among the leading 2025 producers, while keeping the different period and processing stage in view.

Net import reliance
Net imports as a percentage of U.S. consumption; USGS usually starts with imports minus exports, then applies adjustments that differ by material.
Critical mineral
A nonfuel material that is essential to U.S. economic or national security, has a supply chain vulnerable to disruption, and serves an essential manufacturing function.
Percentage point
The direct difference between two percentages; a move from 60% to 40% is a fall of 20 percentage points.
Mine, refinery, and smelter
A mine extracts material, while a refinery or smelter processes it; the production view names the stage available for each material.
Side Quest / VisualizationStart with aluminum, compare 34 entries by their 2025 net import reliance, move through the selected material's five-year path, select a named import source, and look for that country among the leading world producers.

United States · critical minerals · 2021–2025

Critical
supply lines

See how much the United States relied on imports for critical minerals in 2025 and which countries supplied them.

These materials turn up in power lines, fertilizer, phones, vehicles, tools, and many other products. A high import share can matter, but it does not prove that a shortage is likely.

USGS / MCS 20262025 EST.

Entries compared34

100% net import reliant8

At least 75% reliant21

Static analysis · no live source request

01 · Compare reliance

How much of U.S. use came through net imports in 2025?

Each card shows net import reliance: imports minus exports, with source-specific adjustments, as a share of U.S. consumption. Select a material to carry it through every view.

Aluminum60%net import reliance in 2025

21 of 34 comparable entries were at least 75% net import reliant in 2025. Signs such as “>50%” are published bounds, not exact values; bound entries are placed at the printed threshold.

02 · Follow five years

How did aluminum move from 2021 to 2025?

The line follows the published net import reliance for the selected material. Move the year control to read one point; the import-source and production views keep their own labeled periods.

202560%

Published percentage

Five-year difference−1 percentage point2025 minus 2021

How USGS calculated itDefined as imports – exports ± adjustments for industry stock changes; excludes traded scrap.Definitions vary because material markets differ.

03 · Trace U.S. imports

Where did U.S. imports of aluminum come from?

These shares cover 2021–2024 and the source category “all reported forms.” Select a country to look for it in the production view.

The largest named import source was Canada at 56%. “Other countries” combines sources that USGS did not list separately.

04 · Check production

Where was the related material produced in 2025?

The bars show each country's share of the published world total for aluminum smelter production. This may be a mine, refinery, or smelter measure, as named below.

MeasureAluminum smelter production

Published world total74M metric tons

Do the leaders match?

No—the leading countries differ.

Largest named import sourceCanada · 56%Largest producerChina · 60.8%

13 of 34 entries had the same leading named import source and leading producer. A country can refine, trade, or re-export material mined somewhere else, so these views should not be treated as a shipment path.

Reader guide

What the terms mean

Open the notes for definitions and the limits that matter when reading the charts.

Net import reliance

Net imports as a percentage of U.S. consumption. USGS usually starts with imports minus exports, then applies adjustments that differ by material.

Critical mineral

A nonfuel material that is essential to U.S. economic or national security, has a supply chain vulnerable to disruption, and serves an essential manufacturing function. This page follows the final 2025 federal list.

Percentage point

The direct difference between two percentages. A move from 60% to 40% is a fall of 20 percentage points.

Mine, refinery, and smelter

A mine extracts material. A refinery or smelter processes it. The production view names the stage available for each selected material.

How to read the source and its limits

The page retains 34 critical-material entries with a complete five-year reliance series, a 2021–2024 import-source table, and a compatible 2025 world-production table. It does not represent all 60 minerals on the final 2025 list.

USGS marks 2025 values as estimates. Printed bounds such as “more than 50%” stay as bounds. Country values and world totals are independently rounded, so displayed shares may not add to exactly 100%.

Net import reliance is not a probability of shortage, a measure of political risk, or a score of overall importance. Import-source shares cover a four-year period, while production uses 2025 estimates. The two views describe different stages and periods.

A standard-library Python reducer verifies one pinned USGS CSV, applies 34 explicit table mappings, preserves published bounds, and writes a deterministic 57,523-byte static snapshot with no runtime request.

Why this exists

The question

Following one critical material from U.S. net import reliance to named import sources and world production will make foreign reliance easier to interpret without treating imports as a direct mine-to-country shipment path or a probability of shortage.

What to try

Start with aluminum, compare 34 entries by their 2025 net import reliance, move through the selected material's five-year path, select a named import source, and look for that country among the leading world producers.

Method and limits

About the data

I selected the U.S. Geological Survey Mineral Commodity Summaries 2026 data release through the allowlisted USGS provider. The National Minerals Information Center publishes the release under CC0 1.0 Universal. Its commodity table contains U.S. salient statistics, 2021–2024 import-source shares, and world production statistics for more than 90 nonfuel minerals and materials. The related USGS report identifies the final 2025 list of 60 critical minerals.

I downloaded the official `MCS2026_Commodities_Data.csv` from ScienceBase. The exact 3,189,010-byte source has SHA-256 `582a0aa231aea53d8a97dc8d1cd3dfa5f885cf3760353e3d029d7f0ae4fbaaf5`. A standard-library Python builder verifies that hash, the byte count, the twelve-column schema, and all 8,886 rows before reducing the data. The source uses Windows-1252 encoding.

The experience retains 34 entries that have all three parts needed for the comparison: one complete U.S. net-import-reliance series from 2021 through 2025, one 2021–2024 import-source group totaling about 100%, and one compatible 2025 world-production table. Explicit mappings select the relevant source rows for each material. They are necessary because the publication uses different product forms and production stages across commodities. The builder preserves published greater-than and less-than signs. It calculates country production shares from the report's rounded world total and combines producers outside the five largest into one remainder. Repeated builds produced the same 57,523-byte browser snapshot with SHA-256 `dac8af1831bcc9a623d2b6de0257a18b5587866d0c4e78c5f10e246281a74804`; the browser makes no runtime request.

USGS marks 2025 values as estimates. The 34 entries do not represent every mineral on the final 2025 list. Import-source shares cover 2021–2024, while production uses 2025 estimates. Some import and production views refer to different forms or stages, which the interface names. Country rows and world totals are independently rounded and may not add to exactly 100%. Net import reliance does not measure the probability of a shortage, political risk, overall importance, or why reliance changed. A source country can refine, trade, or re-export material mined elsewhere, so matching country names do not establish a physical shipment path.

Skills used

  • Data analysis
  • Data engineering
  • Statistical reasoning
  • Systems design
  • Visualization
  • Information design
  • Interaction design
  • Visual design
  • Product thinking
  • Editorial storytelling
  • Accessibility
  • Performance

What the data shows

  1. Twenty-one of the 34 comparable entries were at least 75% net import reliant in 2025. Eight were reported at exactly 100%.
  2. Aluminum was 60% net import reliant in 2025. Canada supplied 56% of reported U.S. aluminum imports in 2021–2024, while China accounted for 60.8% of estimated 2025 world smelter production.
  3. The leading named U.S. import source and leading producer were the same country for 13 of 34 entries. This comparison does not trace shipments because trade and production measure different stages and periods.
  4. Among entries with exact endpoints, vanadium had the largest fall in net import reliance from 2021 to 2025 at 20 percentage points. Palladium had the largest rise at 22 points.