In case you are visiting Utah..

Rio Tinto Kennecott Visitor Experience

The Rio Tinto Kennecott Visitor Experience is dedicated to educating the public about Kennecott’s key role in modern life, safe mining practices, and responsible environmental stewardship. Learn about our history and see first-hand the gigantic scale of our operation, vehicles, and artifacts. Discover how ore gets processed and refined to become 99.99% copper, an essential element in today’s infrastructure, manufacturing, and technology.

Our Kennecott mine has operated for 120 years, providing domestically -sourced copper to the United States and beyond. As we look towards the energy transition, Kennecott will continue to play an important role by responsibly mining and smelting this critical mineral for our electric vehicles, our renewable energy, and numerous other vital applications.

*******************

Another ChatGPT question: how many copper mines are currently operating on federal land in the US and are they owned by US corporations? When I do ChatGPT I will (from now on) post the whole thing with the summary at the top who aren’t into the details.  It’s Chat’s summary and not mine. I’d be interested in whether in the future, you all would prefer I just post the summary items and link to the rest.  Here’s the link to this one. Hopefully you don’t need to pay for ChatGPT to read it, if you do, let me know.

*************

📊 What this shows (pattern)

Count (realistic, production-weighted)

• ~8 major copper mines clearly involve federal land
• These account for the majority of U.S. copper output

Key insight

Even where mines are “U.S.-owned”:

• They often operate under the 1872 Mining Law framework
• They rely on federal mineral rights (public land)
• And they may involve:
  • foreign partners (Morenci)
  • global supply chains and financing

---

🧭 Bottom line

• The U.S. likely has ~8–10 major copper mines operating on (or partly on) federal land
• Most are operated by a U.S. company (Freeport-McMoRan)
• But:
  • At least one of the largest is fully foreign-owned
  • And joint ventures are common

************

Here’s the rest of the info.

Short answer: there is no single official count of “copper mines on federal land”, but we can triangulate a reasonable picture from federal data and industry sources—and the ownership is mostly not U.S.-only.

---

1) How many copper mines are operating (total vs. federal land)

• The U.S. Geological Survey reports roughly ~25 operating copper mines in the U.S. in recent years (with ~17 producing nearly all output).
• Meanwhile, the U.S. Government Accountability Office found 872 active mining operations of all types on federal land (hardrock + others), but does not break them down by commodity (e.g., copper).

👉 The key complication:
Most large U.S. copper mines are not purely “on federal land”—they typically sit on a patchwork of land ownership:

• patented private mining claims
• federal (BLM or Forest Service) land
• state or private surface land

Congressional testimony notes many major copper mines have “mixed ownership (private and U.S.)” and are often adjacent to or partially on federal land rather than entirely on it.

---

2) Realistic estimate of copper mines on federal land

Because of that mixed ownership structure:

• Only a subset of the ~25 U.S. copper mines operate on (or partly on) federal land.
• Based on known major mines and land status (Arizona, Utah, New Mexico, Nevada), a reasonable estimate is:

👉 ~10–15 major copper mines have some operations on federal land
(not necessarily 100% of their footprint)

Examples include:

• Morenci Mine (partly on federal land)
• Sierrita Mine (BLM/Forest interface)
• Bingham Canyon Mine (mixed ownership)
• Safford Mine

These few account for the vast majority of U.S. copper production.

---

3) Are they owned by U.S. corporations?

Mostly no—ownership is heavily international.

Major operators of U.S. copper mines:

• Freeport-McMoRan (U.S.-based)
• Rio Tinto
• BHP
• Sumitomo Group

What that means in practice:

• Some mines are majority U.S.-owned (e.g., Freeport-McMoRan operations)
• Many are joint ventures with foreign firms
• Some are primarily foreign-owned

 

Major U.S. copper mines on / involving federal land

1) Morenci Mine (Arizona)

• Owner: Freeport-McMoRan (U.S., 72%) + Sumitomo (Japan, 28%)
• Federal land presence: Yes (significant unpatented claims on federal mineral estate)
• Ownership type: Mixed (U.S. + foreign JV)

👉 One of the clearest examples of:

• Direct federal land use
• Mixed corporate ownership

---

2) Bingham Canyon Mine (Utah)

• Owner: Rio Tinto (UK/Australia)
• Federal land presence: Yes (historic federal claims + large public land footprint)
• Ownership type: Foreign-owned

👉 This is the largest open-pit copper mine in the world and a key example where:

• Production occurs partly on federal land
• Ownership is entirely non-U.S.

---

3) Safford Mine (Arizona)

• Owner: Freeport-McMoRan (U.S.)
• Federal land involvement: Yes (land exchanges with BLM; adjacent federal land)
• Ownership type: U.S.-owned

---

4) Sierrita Mine (Arizona)

• Owner: Freeport-McMoRan (U.S.)
• Federal land presence: Yes (BLM + Forest Service region)
• Ownership type: U.S.-owned

---

5) Bagdad Mine (Arizona)

• Owner: Freeport-McMoRan (U.S.)
• Federal land presence: Yes (BLM land and claims)
• Ownership type: U.S.-owned

---

6) Miami Mine (Arizona)

• Owner: Freeport-McMoRan (U.S.)
• Federal land presence: Partial (mixed private + federal claims)
• Ownership type: U.S.-owned

---

7) Chino Mine (New Mexico)

• Owner: Freeport-McMoRan (U.S.)
• Federal land presence: Yes (BLM + Forest Service interface)
• Ownership type: U.S.-owned

---

8) Tyrone Mine (New Mexico)

• • • Owner: Freeport-McMoRan (U.S.)
    • Federal land presence: Yes (significant federal land use)
    • Ownership type: U.S.-owned

Ownership breakdown

U.S.-owned (dominant operator)

• Safford
• Sierrita
• Bagdad
• Miami
• Chino
• Tyrone

👉 6 of ~8 are primarily U.S.-owned

---

Mixed ownership (U.S. + foreign)

• Morenci

---

Foreign-owned

• Bingham Canyon (Rio Tinto)