Japan’s Tokyo 2020 Medal Project collected electronics through two national channels from April 2017 through March 2019. NTT Docomo shops took in about 6.21 million used phones, while municipalities collected approximately 78,985 tonnes of small electronic devices, including phones.

The final reporting lists about 32 kilograms of gold, 3,500 kilograms of silver and 2,200 kilograms under the bronze category. Organizers said the recovered material covered the metal needed for roughly 5,000 Olympic and Paralympic medals.

Those numbers describe a collection and refining program, not a direct conversion of every donated device into medal metal. Most of the incoming mass was plastic, glass, steel and other material. Gold and silver were present in far smaller quantities and had to be separated, smelted and refined.

Two collection streams produced the headline totals

The project ran from April 1, 2017 to March 31, 2019. An official Tokyo 2020 sustainability report separates the two figures: municipal collection produced the 78,985-tonne total, while about 2,300 NTT Docomo shops collected 6.21 million phones.

The numbers should not be added as if they measure the same thing. One counts handsets collected through phone shops. The other measures the mass of a much broader municipal stream that included mobile phones and other consumer electronics such as cameras, laptops and handheld game systems.

Participation became national in scale. The report records 1,621 local governments, more than 90 percent of Japan’s municipalities, alongside support from 38 companies, central-government buildings and collection points run by the Tokyo Metropolitan Government.

That reach mattered because small electronics are scattered across millions of households. A refinery cannot recover metal from a phone that remains in a drawer, and collection systems lose efficiency when each device requires a special trip.

The collection campaign was the public-facing end of a longer industrial chain.

Old devices did not go straight to a medal maker

A phone holds useful metals in circuit boards, contacts, wiring and other components, but each is present in a complex mixture. The project’s documented process moved through collection, classification, dismantling, extraction and refining before manufacturers received usable metal.

Japan already had a legal framework for that chain. The Small Home Appliance Recycling Act took effect in April 2013 and covered more than 100 kinds of electrical or battery-powered household products. Municipalities could choose what to collect, while government-certified operators dismantled, crushed and sorted devices into resource streams.

The medal campaign used that infrastructure for a visible, time-limited objective. Donation boxes supplied a reason to return devices that might otherwise remain in drawers or enter ordinary waste, while certified businesses handled the less photogenic work of separating mixed materials.

Gold, silver and bronze are medal names

The Tokyo 2020 media guide reports final secured amounts of about 32 kilograms of gold, 3,500 kilograms of silver and 2,200 kilograms of bronze material. The report uses familiar medal labels, but “bronze” is not a pure chemical element. Tokyo’s bronze medals were made from a copper-rich alloy.

The gold label also needs context. A modern Olympic gold medal is not solid gold. Tokyo’s first-place medals used a pure-silver body plated with more than six grams of gold, while silver medals were pure silver. The large recovered silver total therefore served both gold and silver medal production.

An official Tokyo 2020 legacy report records approximately 5,000 medals produced for the two Games. The exact number awarded depends on event entries and team rosters, which is why official summaries usually use “approximately.” The competition took place in 2021 after the pandemic delay, but retained the Tokyo 2020 name.

Why millions of phones become an urban mine

Electronics use gold because it conducts electricity reliably and resists corrosion. Silver and copper also carry current efficiently. A single handset contains only small amounts, often spread across thin contacts and circuit-board traces, but millions of devices turn those fragments into industrial feedstock.

Earlier ScienceBlog reporting on metals in discarded phones explains the urban-mine idea. The useful material has already been extracted from ore, refined and concentrated inside products. Getting enough devices into formal collection can be harder than recognizing their value because a dead phone is easy to store, forget or throw away.

Tokyo attached a deadline and a public symbol to that collection problem.

The medals were not a complete recycling audit

The project demonstrated that a nationwide network could secure enough targeted metal for a defined manufacturing job. It did not establish that every useful material in the collected devices was recovered, or that recycling electronics has no environmental cost.

Transport, dismantling, smelting and refining require energy and controlled handling. Recovery rates differ by element, product design and facility. The final totals also do not divide the gold, silver and copper-rich material between phones collected at Docomo shops and the broader municipal stream.

There is another denominator to keep visible. Nearly 79,000 tonnes entered the collection system, while the three reported medal-metal categories together amounted to less than 6 tonnes. The rest was not necessarily discarded, but the medal reports do not provide a complete mass balance for every plastic, glass, ferrous metal or battery component.

The defensible claim is narrower: donated electronics supplied all of the metal required for the medal program.

The lasting test came after the Games

The Global E-waste Monitor 2024 estimated that the world generated 62 million tonnes of electronic waste in 2022. Only 22.3 percent was documented as formally collected and recycled in an environmentally sound way. Small devices remain difficult because their individual weight is low and many never reach a formal collection point.

Against that scale, a few thousand medals could not materially change the global balance. The Tokyo project’s more durable contribution was organizational: collection boxes, participating municipalities, certified recyclers and a reason for the public to return devices.

The sustainability report says Japan’s Ministry of the Environment launched an After Medals Project in April 2019, as the medal collection window closed, to keep small-device recovery moving. Whether those ordinary routes remain convenient and well used is a more demanding measure of the project’s legacy than the medals themselves.