"Open-pit mining was not just a new way to mine, but a new way to live. After the 1920s, hard-rock mines across the American West transitioned from underground operations to large open-pit holes. Butte, Montana, a well-known underground mining center, experienced this switch whe…
"Open-pit mining was not just a new way to mine, but a new way to live. After the 1920s, hard-rock mines across the American West transitioned from underground operations to large open-pit holes. Butte, Montana, a well-known underground mining center, experienced this switch whe…
"Open-pit mining was not just a new way to mine, but a new way to live. After the 1920s, hard-rock mines across the American West transitioned from underground operations to large open-pit holes. Butte, Montana, a well-known underground mining center, experienced this switch whe…