Full Breakdown
America250 Time Capsule: A 250-Year Snapshot Beneath Independence Hall
7/3/2026, 11:32:07 PM
Burying
On July 4, 2026 a 900-pound (?400 kg) stainless-steel cylinder will be lowered underground at Independence National Historical Park in Philadelphia. Covered by a 1,100-pound bell jar, the sealed container will remain untouched until July 4, 2276, when it will be opened on the nation’s 500th anniversary.
Engineering
NIST mechanical engineer Jay Nanninga selected a seamless cylindrical design to eliminate joints that could corrode. The cylinder sits inside a bell that creates an air pocket, and its interior is sealed with a thin indium layer. Separate compartments hold archival paper and cardboard-boxed artifacts, protecting them from moisture.
Contributions
All 50 states, five territories and the District of Columbia submitted items. Highlights: Maine’s whalebone message; Arizona’s copper ingot; Ohio’s Wright-flight fabric; Wisconsin’s letter from Governor Tony Evers, a veterans-service pin, four tribal emblems and a photo of Old Abe the war eagle; Georgia’s Fort Moore challenge coins, a Masters-logo medallion and a Coca-Cola bottle with a new song; Oklahoma’s proclamation by Governor Kevin Stitt, a belt buckle, a 2025 Thunder championship pin and a First Americans Museum button for 39 tribal nations. Also a North Atlantic right-whale bone and a New Mexico anise-cookie recipe.
Statements
America250 chair Rosie Rios described the capsule as “a representative record of the United States at 250 years” and said it offers “a clear, authentic window into who we were at 250.” National Park Service will place a capstone with location data in a succession plan. NIST officials cited the indium seal and bell-jar design as moisture-proof safeguards.
Criticism
Selection rules barred decay-prone items, rejecting Maryland’s Old Bay seasoning and a leather football. Native-American beaded pieces on elk hide were required to be resubmitted on fabric, drawing criticism that the criteria may curb cultural authenticity while organizers stress durability.
Reports
The New York Times reports a 900-pound cylinder; the Straits Times lists a 400-kg (?882-pound) stainless-steel cylinder, a slight mass discrepancy. No inventory details all ~200 items, leaving the composition unknown.
Impact
The capsule offers a snapshot of American society, technology and values, giving future generations a view of the nation’s self-perception and diversity.
Quotes
- “a representative record of the United States at 250 years.” — Rosie Rios, America250 chair
- “I do think, in 250 years, all the stainless will be in really good shape.” — Jay Nanninga, NIST engineer
- “This is a remarkable opportunity to leave a piece of Oklahoma’s story for future generations.” — Amy Blackburn, Oklahoma tourism chief
- “No one remembers that Old Abe came from Lac du Flambeau.” — John Johnson Sr., Lac du Flambeau tribal president
Next
The capsule will stay sealed until 2276, when a retrieval team will excavate it as part of the United States’ 500th-anniversary celebrations. The capstone and succession documents will guide custodians in locating and opening the time capsule.
