National Register Listing

Frisco-Bagley Mine and Tunnel

a.k.a. Frisco-Bagley Mining Complex; Bagley Tunnel; Frisco Mill; 5SA.36

820 Cty Rd. 9, Silverton, CO
Local significance of the building:
Architecture; Engineering; Industry

Listed in National Register of Historic Places in 2020.

The National Register of Historic Places is the official list of the Nation’s historic places worthy of preservation. Authorized by the National Historic Preservation Act of 1966, the National Park Service’s National Register of Historic Places is part of a national program to coordinate and support public and private efforts to identify, evaluate, and protect America’s historic and archeological resources.

architecture engineering industry
Audiobooks about the history of Colorado.
Colorado was originally part of the Kansas and Nebraska territories, but was separated and made into its own territory in 1861. It became a state in 1876, 100 years after the signing of the Declaration of Independence.
Colorado random facts
San Juan County, Colorado, has a rich and fascinating history that can be traced back to the early Native American tribes who inhabited the region. These tribes, including the Ute and Navajo, relied on the area's natural resources such as water, wildlife, and forests for their sustenance and cultural practices.

The arrival of European settlers in the mid-1800s brought significant changes to the region. Explorers and prospectors flocked to San Juan County in search of gold and silver, leading to a mining boom that transformed the area. Towns like Silverton and Animas Forks sprang up to support the growing mining industry, attracting thousands of miners and entrepreneurs from all over the country.

The mining operations in San Juan County were not without their challenges. Harsh weather conditions, rugged terrain, and isolation made life difficult for the miners and their families. Despite these challenges, the mining industry thrived, and San Juan County became one of the leading producers of silver and gold in Colorado.

However, by the early 20th century, the mining industry declined due to a combination of economic factors and the depletion of easily accessible ore deposits. Many mines closed down, and the population of San Juan County dwindled. Today, the county's economy is largely based on tourism, with visitors attracted to its beautiful scenery, historic architecture, and outdoor recreational opportunities.

San Juan County's history is a testament to the resilience and adaptability of its inhabitants. From its Native American roots to its mining heyday and the transition to a tourism-based economy, the county has undergone significant changes, but its unique heritage continues to be cherished and celebrated by locals and visitors alike.

This timeline provides a condensed summary of the historical journey of San Juan County, Colorado.

  • 1880: San Juan County is established.
  • 1860s-1880s: Population boom due to mining activities, mainly silver mining.
  • 1883: The Denver and Rio Grande Railroad reaches Silverton, leading to further growth.
  • Late 1880s-1890s: The silver crash leads to a decline in mining and population.
  • Early 20th century: Limited mining activities and a small population remain.
  • 1980s-present: The county experiences a revival in tourism and outdoor recreation.
  • 2002: The Great Sand Dunes National Park and Preserve expands into San Juan County.