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Haul roads winding down the terraced wall of a large open-pit mine

Bingham Canyon Mine: The History of the World's Largest Man-Made Excavation and the Visitor Question

How Utah's Bingham Canyon copper mine began, how big the pit is, the 2013 slide, and what the Rio Tinto Kennecott Visitor Experience offers, from a Provo base.

Bingham Canyon Mine is the big hole west of Salt Lake City that you can see from a plane window, and it is one of the biggest pieces of Utah's industrial history. It has also had a bumpy visitor story: a public overlook closed after a huge slide in 2013, a new Visitor Experience opened in 2019, and the company's own page says it is open today. This guide covers the history, the size, and what to check before you make the drive.

Quick facts

Item Detail Source
Size About 2.75 miles across, three-quarters of a mile deep KSL (2019)
First underground mining 1890 KSL
Utah Copper Company founded 1903 KSL
Owner since 1989 Rio Tinto KSL
Visitor site 12732 Bacchus Highway, Herriman Rio Tinto
Hours 9:30 a.m. to 2:30 p.m. daily Rio Tinto
Tickets $6.00, under 5 free, buy online Rio Tinto

How the pit began

KSL's history of the canyon says Enos Wall visited in 1887 and recognized the potential for low-grade porphyry copper, ore with a thin, spread-out dose of copper that would not pay under old underground methods. Underground mining began in 1890. In 1903 Wall co-founded the Utah Copper Company, which built a mill at Copperton able to handle 300 tons a day, and the property was optioned to investors brought in through mining engineer Daniel C. Jackling. KSL says the mine became the world's first open-pit copper mine in 1904. Sources do not agree on the year: KSL's 2019 visitor story says the mine opened in 1906, so treat the exact start as one of those dates and not a settled fact.

The business grew through consolidation. Two rival companies merged in 1910, Kennecott Copper Corporation bought a quarter of Utah Copper in 1915 and absorbed the rest in 1936, and Utah ranked as the fourth-largest copper producer in the country by 1919. KSL reports that nearly a third of the copper used by the Allied Forces in World War II came from the mine, and that from 1904 to 1982 it produced more than 24.6 billion pounds of copper. Rio Tinto acquired it in 1989. KSL says the pit was added to the National Register of Historic Places in 1966, among the first Utah sites listed.

For the other side of the same era, see our Geneva Steel history, which covers the Utah Valley industry that grew up the same century, and the Eureka and Tintic ghost towns guide for the mining camps south of here.

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The 2013 slide

In April 2013 about 165 million tons of earth slipped in the pit's northeast section, KSL reported. Engineers had measured ground movement, in fractions of an inch, for roughly two months. No employees were hurt, though roads, buildings and vehicles in the pit were damaged. The visitor center that had stood at the overlook stayed closed for years. In 2019 the site reopened under a new name, the Visitor Experience, with shuttles instead of driving up to the exhibits.

The visitor question

Rio Tinto's visitor page, which we read on Nov. 3, 2026, says the Visitor Experience is now open from 9:30 a.m. to 2:30 p.m. every day, holidays included. Tickets are $6.00 per person, children under 5 are free, and the page says tickets are limited and not guaranteed at the gate. Saturdays and public holidays are the busiest. You can cancel up to an hour before your slot for a refund.

It is self-guided and takes place at the mine overlook. Rio Tinto says you can see the active pit, two levels of exhibits on mining and its operations, and large equipment including a haul truck. A typical visit runs about an hour. The page does not name a season, and earlier years had an April-to-October window, so check the page for current dates before driving.

Planning the trip from Provo

Why Utah Valley cares

Heavy industry is part of the Wasatch Front's story, and Utah Valley's own chapter is in our Geneva Steel history. Natural resources are also the subject of our Water Wars guide, and Provo history gives the local background.

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Frequently Asked Questions

How big is Bingham Canyon Mine?
KSL, reporting on the 2019 reopening of the visitor site, gave the pit as 2.75 miles across and three-quarters of a mile deep, and called it the largest man-made excavation on Earth. Rio Tinto, the owner, describes the overlook as a view into the active pit.
Who started the mine?
KSL traces it to Enos Wall, who visited Bingham Canyon in 1887 and saw the potential for low-grade porphyry copper. Wall co-founded the Utah Copper Company in 1903, with Daniel C. Jackling involved in the investment, and a mill at Copperton that could handle 300 tons a day.
Can the public visit Bingham Canyon Mine?
Yes, through the Rio Tinto Kennecott Visitor Experience. Rio Tinto's page said, when we read it on Nov. 3, 2026, that it is now open daily from 9:30 a.m. to 2:30 p.m., including holidays, with tickets bought online in advance. It also says tickets are limited and not guaranteed at the gate.
How much does it cost?
Rio Tinto's page lists tickets at $6.00 per person, with children under 5 free. You can cancel up to one hour before your visit for a full refund. Prices change, so confirm on the Rio Tinto page before you go.
Where is the visitor site and how do you get in?
The address on Rio Tinto's page is 12732 Bacchus Highway, Herriman. Shuttles run every 30 minutes from 9:30 a.m., with the last one leaving at 2:30 p.m. A typical visit takes about an hour, and the experience is self-guided at the mine overlook.
What happened in the 2013 slide?
KSL reported that in April 2013 about 165 million tons of earth slipped in the mine's northeast section after engineers had tracked small ground movement for about two months. No employees were injured, but roads, buildings and vehicles in the pit were damaged. The earlier visitor center stayed closed for years afterward.
Is the pit still an open-pit mine?
Yes. The company's visitor page describes an active pit. KSL also reported in a history piece that Rio Tinto announced a $55 million investment in September 2022 to resume underground copper mining.
How far is it from Provo?
The visitor site is in Herriman on the southwest side of the Salt Lake Valley. We did not time the drive for this guide, so use a map app with the Herriman address above and check traffic before you leave.

Sources

The facts in this guide were checked against these sources. Hours, fees and rules change, so confirm anything time-sensitive with the source before you go. How we make Provo.com.

  1. Rio Tinto Kennecott Visitor Experience, Rio Tinto. Checked November 3, 2026.
  2. Rio Tinto Kennecott offers new visitor experience 6 years after massive slide, KSL. Checked November 3, 2026.
  3. Reflecting on the rich history of copper mining in Bingham Canyon, KSL. Checked November 3, 2026.
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