Real Assets
All the Metals We Mined in One Visualization
All the Metals We Mined in One Visualization
Metals are a big part of our daily lives, found in every building we enter and all devices we use.
Today, major industries that directly consume processed mineral materials contribute 14% of the United States economy.
The above infographic visualizes all 2.8 billion tonnes of metals mined in 2022 and highlights each metal’s largest end-use using data from the United States Geological Survey (USGS).
Iron Ore Dominance
Iron ore dominates the metals mining landscape, comprising 93% of the total mined. In 2022, 2.6 billion tonnes of iron ore were mined, containing about 1.6 billion tonnes of iron.
| Metal/Ore | Quantity Mined in 2022 (tonnes) | % of Total |
|---|---|---|
| Iron ore | 2,600,000,000 | 93.3% |
| Industrial metals | 185,111,835 | 6.6% |
| Technology and Precious Metals | 1,500,008 | 0.05% |
| Total | 2,786,611,843 | 100% |
Percentages may not add up to 100 due to rounding.
Iron ores are found in various geologic environments, such as igneous, metamorphic, or sedimentary rocks, and can contain over 70% iron, with many falling in the 50-60% range.
Combined with other materials like coke and limestone, iron ore is primarily used in steel production. Today, almost all (98%) iron ore is dedicated to steelmaking.
The ore is typically mined in about 50 countries, but Australia, Brazil, China, and India are responsible for 75% of the production.
Because of its essential role in infrastructure development, iron ore is one of the most crucial materials underpinning urbanization and economic growth.
Industrial Metals
Industrial metals occupy the second position on our list, constituting 6.6% of all metals mined in 2022. These metals, including copper, aluminum, lead, and zinc, are employed in construction and industrial applications.
Aluminum constituted nearly 40% of industrial metal production in 2022. China was responsible for 56% of all aluminum produced.
| Industrial Metals | 2022 Mine Production (tonnes) | % of Total |
|---|---|---|
| Aluminum | 69,000,000 | 37.3% |
| Chromium | 41,000,000 | 22.1% |
| Copper | 22,000,000 | 11.9% |
| Manganese | 20,000,000 | 10.8% |
| Zinc | 13,000,000 | 7.0% |
| Titanium (mineral concentrates) | 9,500,000 | 5.1% |
| Lead | 4,500,000 | 2.4% |
| Nickel | 3,300,000 | 1.8% |
| Zirconium Minerals (Zircon) | 1,400,000 | 0.8% |
| Magnesium | 1,000,000 | 0.5% |
| Strontium | 340,000 | 0.2% |
| Uranium | 49,355 | 0.03% |
| Bismuth | 20,000 | 0.01% |
| Mercury | 2,200 | 0.00% |
| Beryllium | 280 | 0.00% |
| Total | 185,111,835 | 100% |
In the second position is chromium, which plays a primary role in rendering stainless steel corrosion-resistant. South Africa led chromium production, accounting for 44% of the total mined last year.
Technology and Precious Metals
Despite representing less than 1% of all the metals mined, technology metals have been on the news over the last few years as countries and companies seek these materials to reduce carbon emissions and improve productivity.
| Technology and Precious Metals | 2022 Mine Production (tonnes) | % of Total |
|---|---|---|
| Tin | 310,000 | 20.7% |
| Rare Earth Oxides | 300,000 | 20.0% |
| Molybdenum | 250,000 | 16.7% |
| Cobalt | 190,000 | 12.7% |
| Lithium | 130,000 | 8.7% |
| Vanadium | 100,000 | 6.7% |
| Tungsten | 84,000 | 5.6% |
| Niobium | 79,000 | 5.3% |
| Silver | 26,000 | 1.7% |
| Cadmium | 24,000 | 1.6% |
| Gold | 3,100 | 0.2% |
| Tantalum | 2,000 | 0.1% |
| Indium | 900 | 0.1% |
| Gallium | 550 | 0.04% |
| Platinum Group Metals | 400 | 0.03% |
| Rhenium | 58 | 0.004% |
| Total | 1,500,008 | 100% |
They include lithium and cobalt, used in electric vehicles and battery storage, and rare earths, used in magnets, metal alloys, and electronics. Many of them are considered critical for countries’ security due to their role in clean energy technologies and dependency on other nations to supply domestic demand.
However, despite increasing interest in these metals, they are still behind precious metals such as gold and silver regarding market size.
The gold market, for example, reached $196 billion in 2022, compared to $10.6 billion for the rare earths market.
Real Assets
How Much Gold is in Fort Knox?
The United States Bullion Depository holds more than half of the Treasury’s $428B in gold reserves.
How Much Gold Is in Fort Knox?
This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources.
U.S. President Donald Trump has promised to visit Fort Knox “to make sure the gold is there.”
Officially, the United States Bullion Depository (commonly known as Fort Knox) holds over half of the Treasury’s $428 billion gold reserves.
In this graphic, we put that amount into perspective by comparing Fort Knox’s reserves with central bank gold reserves worldwide. The data comes from the U.S. Mint and the World Gold Council. For illustrative purposes, we considered a pallet of 1,190 gold bars (400 troy ounces each) weighing approximately 14.8 tonnes.
What Is Fort Knox?
Located in Kentucky, Fort Knox is a U.S. Army installation that serves as the primary storage site for America’s gold reserves. The facility was established in the 1930s to protect gold from potential foreign attacks.
The first gold shipment arrived in 1937 via U.S. Mail from the Philadelphia Mint and the New York Assay Office. During World War II, Fort Knox safeguarded important U.S. documents, including the Declaration of Independence, the Constitution, and the Bill of Rights. It has also housed international treasures, such as the Magna Carta and the crown, sword, scepter, orb, and cape of St. Stephen, King of Hungary, before they were returned in 1978.
Currently, it holds 4,175 tonnes of gold, equivalent to nearly half of China’s gold reserves and four times the Swiss central bank’s reserves.
| Reserves | Gold (Tonnes) |
|---|---|
| 🇺🇸 U.S. Reserves | 8,133 |
| 🏛️ Fort Knox | 4,175 |
| 🇨🇳 China | 2,280 |
| 🇯🇵 Japan | 846 |
| 🇨🇭 Switzerland | 1,040 |
| 🇮🇳 India | 876 |
| 🇰🇷 South Korea | 104 |
| 🇸🇬 Singapore | 220 |
| 🇧🇷 Brazil | 130 |
| 🇲🇽 Mexico | 120 |
| 🇹🇭 Thailand | 235 |
Only small samples have been removed for purity testing during audits; no major transfers have occurred for years.
Gold Bar Specifications
- Size: 7 inches × 3 5/8 inches × 1 3/4 inches
- Weight: 400 ounces (27.5 pounds)
Extreme Security
Only a select few know the full security procedures, and no single person knows how to fully open the vault.
In 1974, a group of journalists and a Congressional delegation were allowed inside—marking the first official visit since Fort Knox’s creation. Previously, President Franklin D. Roosevelt was the only person other than authorized personnel to access the vaults.
In 2017, Treasury Secretary Steve Mnuchin, Kentucky Governor Matt Bevin, and several Congressional representatives became the second group to visit the vault.
Learn More on the Voronoi App 
If gold was shared equally, how much would you get? Check out this graphic to find out.
Real Assets
Charted: Top Suppliers of Aluminum and Steel to the U.S.
President Trump has imposed a 25% tariff on all steel and aluminum imports.
Charted: Top U.S. Suppliers of Aluminum and Steel
This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources.
U.S. President Donald Trump has imposed a 25% tariff on all steel and aluminum imports, marking one of the most discussed measures of his first month back in the White House.
But which countries are most affected by these tariffs?
This map illustrates the top suppliers of aluminum and steel to the United States in 2024. The data comes from the U.S. Census Bureau. Aluminum includes unwrought aluminum, plates, sheets, and strips; bars, rods, and profiles; foil; wire; pipes and tubes; castings and forgings; and tube or pipe fittings.
Canada: The Largest Partner
Canada is by far the top supplier of both steel and aluminum to the United States. The neighboring country exported $9.4 billion worth of aluminum to the U.S. in 2024, significantly ahead of the second-largest exporter, the European Union, which exported $1.5 billion.
Canada also exported $7.1 billion worth of steel last year, compared to $7 billion from the European Union.
| Country | Steel Imports (USD) | Aluminum Imports (USD) |
|---|---|---|
| 🇨🇦 Canada | $7.1B | $9.4B |
| 🇲🇽 Mexico | $3.5B | $397M |
| 🇧🇷 Brazil | $3.0B | - |
| 🇨🇳 China | $799M | $809M |
| 🇹🇼 Taiwan | $1.3B | - |
| 🇰🇷 South Korea | $2.9B | $781M |
| 🇩🇪 Germany | $1.9B | $318M |
| 🇯🇵 Japan | $1.7B | - |
| 🇮🇳 India | $489M | $445M |
| 🇪🇺 European Union | $7B | $1.5B |
| 🇦🇪 UAE | - | $917M |
| 🇧🇭 Bahrain | - | $535M |
| 🇦🇷 Argentina | - | $468M |
| 🇹🇭 Thailand | - | $271M |
| 🇬🇧 UK | $440M | - |
Mexico, South Korea, and Brazil are also among the top suppliers of steel to the United States. Meanwhile, the country imports aluminum from other key partners, including China, the United Arab Emirates, South Korea, Bahrain, and Argentina.
A recent report by the Center for Strategic and International Studies (CSIS) noted that the U.S. produces less than 2% of the world’s primary aluminum.
Learn More on the Voronoi App
If you enjoyed this graphic, be sure to check out this chart illustrating the GDP impact of Trump’s tariffs on China.
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