Edgar Experimental Mine Tour — Idaho Springs, Colorado

Discover the Edgar Experimental Mine Tour in Colorado

Explore a rare combination of history and modern engineering at the Edgar Experimental Mine, operated by the Colorado School of Mines (CSM). This working research and training mine sits inside a historic silver and gold mine from the 1870s, offering visitors an immersive look at mining technology—past, present, and future.
Why it’s special:
The Edgar Mine is a living laboratory, used for research, teaching, and industry training, making it one of the only mines in Colorado where visitors see both historic tunnels and active modern testing.

History/Story of the Edgar Experimental Mine

The Edgar Mine was originally a productive silver and gold mine that operated through the 1800s. In 1921, the Colorado School of Mines took over the site to use it as an underground classroom and research facility. For more than a century, CSM students, engineers, and scientists have used the Edgar to test mining equipment, ventilation, rock mechanics, mine safety, blasting, and modern extraction technologies.

What You’ll See & Do at the Edgar Mine

• Walk through historic 19th-century mining tunnels preserved from the original mine

• Learn how the site transitioned into a modern experimental research facility

• See real engineering demonstrations: ventilation systems, drilling rigs, rock bolts, and sensors

• Explore classrooms and testing areas used by CSM students and researchers

• View historic mining tools, ore carts, blasting sites, and early timber supports

• Hear how today’s miners study safety, geology, and underground engineering

• Learn about mineral veins, rock formations, and regional geology

Hands-On Elements: Rock samples, drilling demonstrations (when available), ventilation flow displays, engineering equipment interaction.
Photo/Video Policy: Photography permitted in most areas; restrictions may apply for active research equipment.
Souvenirs & Extras: CSM merchandise, rock specimens, educational materials (sold seasonally).

Pricing of the Edgar Experimental Mine Tour

• General Public Tour: $20 per person

• Students (with ID): $15

• Children (ages 5–12): $10

• Children under 5: Not recommended

• School/University Groups: Special educational rates available

Practical Info for Visiting the Edgar Mine

Duration: 60–75 minutes
Format: Guided engineering-focused underground tour
Schedule & Seasonality: Tours offered spring through fall; limited winter availability
Working Hours: Typically 9:00 AM–3:00 PM by reservation
Audience: STEM students, engineers, families, geology lovers, school groups
Accessibility: Uneven floors and industrial equipment; not wheelchair accessible
Safety & Restrictions:

• Closed-toe shoes required

• Hard hats and safety gear provided

• Underground temperatures stay around 50°F year-round
  Languages: English
  Group Visits: Extremely popular for STEM and engineering programs
  What to Bring/Wear: Jacket, sturdy shoes, camera
  Facilities: Check-in cabin, restrooms (seasonal), parking
  Closures & Downtime: Tours may be limited during active research or academic schedules

Nearby

• Phoenix Gold Mine

• Argo Mill & Tunnel

• Idaho Springs historic downtown

• Indian Hot Springs

FAQs About Visiting the Edgar Experimental Mine

Is this a real working mine?
Yes—while no ore is actively extracted, the mine is fully operational for research, engineering training, safety testing, and academic instruction.

Will I see students or researchers working?
Often—depending on scheduling, you may see CSM students training or engineers testing equipment.

Is the tour too technical for kids?
Guides tailor the information—families enjoy the underground experience, while engineers appreciate the deeper technical details.

Is the mine cold?
Yes—expect temperatures around 50°F, so bring a warm jacket.

Do I walk a lot underground?
Moderate walking on uneven surfaces is required; the tour is not strenuous.