The Bisbee Open Pit Copper Mine, located in Bisbee, Arizona, is a significant historical and geological site that has played a crucial role in the United States' copper mining industry. This comprehensive guide delves into the mine's history, operations, environmental impact, and its role in shaping the town of Bisbee.
History of the Bisbee Open Pit Copper Mine
The Bisbee mine's history dates back to the late 19th century when copper was discovered in the Mule Mountains. In 1906, the Phelps Dodge Corporation began mining operations, which continued until the mine's closure in 1975. At its peak, the Bisbee mine was one of the largest and most productive copper mines in the world.
Bisbee's mining history is marked by significant events, including the 1917 Bisbee Deportation, where over 1,000 striking miners were forcibly removed from the town. This event highlighted the often-contentious relationship between labor and management in the mining industry.
Operations and Production
The Bisbee mine was an open-pit operation, with mining methods evolving over time. Initially, the mine used conventional drilling and blasting techniques. Later, it adopted more modern methods like bucket-wheel excavators and large electric shovels. The mine produced high-grade copper ore, with copper content ranging from 2% to over 30%.
At its peak, the Bisbee mine produced over 800,000 tons of copper annually. In total, it yielded more than 3.5 million tons of copper over its 69-year lifespan, contributing significantly to the U.S. copper industry.
Environmental Impact and Rehabilitation
The Bisbee mine's operations had a substantial environmental impact, with significant soil and water contamination. Tailings, or waste rock, were deposited in nearby valleys, and acidic mine drainage polluted local waterways. The mine's closure in 1975 led to the start of environmental rehabilitation efforts.

Today, the U.S. Environmental Protection Agency (EPA) oversees the cleanup of the Bisbee mine site. The rehabilitation process involves treating and containing contaminated water, stabilizing tailings, and restoring the land for future use. Despite these efforts, the full environmental impact of the mine may not be mitigated for decades.
Legacy and Tourism
The Bisbee Open Pit Copper Mine has left an indelible mark on the town of Bisbee. The mine was the town's primary employer and economic driver for much of the 20th century. Today, Bisbee is a popular tourist destination, known for its historic architecture, vibrant arts scene, and rich mining history.
Visitors can explore the Lavender Pit, the mine's largest open pit, and learn about the mine's history at the Bisbee Mining & Historical Museum. The mine's legacy also lives on in the town's annual Copper Queen Days festival, which celebrates Bisbee's mining heritage.
Bisbee Mining & Historical Museum
The Bisbee Mining & Historical Museum is a must-visit for anyone interested in the Bisbee Open Pit Copper Mine. The museum offers a comprehensive look at the mine's history, from its discovery to its closure. Exhibits include mining equipment, photographs, and artifacts, providing a detailed and engaging exploration of Bisbee's mining past.
| Name | Address | Phone |
|---|---|---|
| Bisbee Mining & Historical Museum | 5 Copper Queen Plaza, Bisbee, AZ 85603 | (520) 432-7071 |
In addition to the museum, the town of Bisbee offers numerous other attractions, including historic homes, art galleries, and scenic hiking trails. The town's unique character and rich history make it a fascinating destination for history buffs and casual visitors alike.