Entry No. 37 — the Salt Lake City file — filed under: ruins
Silver King Mill
The Silver King Mill is a massive, multi-story historic ore-processing facility built in 1921 after a fire destroyed the original structure. Serving one of Park City's most lucrative silver mines, the mill utilized advanced froth flotation technology until operations ceased in 1953. Today, the towering wooden ruins and nearby headframe stand as iconic landmarks on the slopes of Park City Mountain Resort.
The story
In 1921, a catastrophic fire tore through the original Silver King Coalition processing plant, burning the nerve center of Park City's richest silver operation to the ground. Rather than abandon the site, the mining moguls rebuilt on a staggering scale. They erected a multi-story timber monolith directly into the mountainside, designed to process tons of ore brought up from underground shafts using froth flotation—a cutting-edge chemical separation method at the time that squeezed every ounce of silver, lead, and zinc out of raw rock.
The mill shut down in 1953 as ore grades plunged and operating costs mounted, leaving the giant wooden hull marooned on what would eventually become the ski slopes of Park City Mountain Resort. Decades of heavy Wasatch snowpack have buckled timbers and weathered the exterior to a dark charcoal, yet the towering skeleton and adjacent headframe still dwarf the surrounding aspen groves.
What makes the site eerie is the sheer contrast between eras. Thousands of skiers carve past every winter on groomers like Bonanza without giving a second thought to the fact that beneath their bindings lies a industrial graveyard, or that the hollowed-out wooden leviathan behind the safety chain fence once bankrolled the modern state of Utah.
What it's like
Getting here in summer means a steady uphill hike along the Bonanza Mine Trail or taking the Crescent Express chairlift up from the resort base to walk down. Winter visitors can ski right past it along the resort runs. You cannot step inside—the timber framing is severely weathered, structurally compromised, and locked behind tall chain-link fencing with camera surveillance and clear warning signs. Keep your distance, bring a zoom lens to capture the details of the rusted iron roof and soaring wooden walls, and watch for loose tailings along the mountain trails.
The move: Hike the Bonanza Mine Trail or ride the chairlift to view and photograph the towering, weathered wooden mill and nearby headframe against the scenic mountain backdrop.
📍 Before you go The mill is located on the slopes of Park City Mountain Resort. While hikers and skiers can easily view the exterior from nearby trails, the structure itself is structurally unstable, fenced off, and strictly closed to entry.
- 📍 Park City
- 💸 Free
- ⚡ Low-key
- 🌗 Outdoors
Where: Park City, UT 84060, USA
Hours: Added 2026-07-20 — confirm current access before you go.
Pair it with
- Silver King Mine — The mine shaft and headframe sit just yards away, making it easy to trace how raw silver ore moved directly from underground to the mill.
- Judge Mine Tunnel — Pair this with another key piece of Park City's subterranean history located just half a mile across the same resort ridge.
- Ontario Mine — Continue your mining history loop less than a mile away at the massive strike that launched Park City's 19th-century boom.
Good to know
Can you go inside the Silver King Mill structure?
No. The mill is strictly fenced off and closed to all entry due to structural instability and fall hazards. Stepping past the perimeter fence is trespassing.
How do you reach the mill?
During summer, hike or mountain bike up via the Bonanza Mine Trail on Park City Mountain, or ride the lift up and hike down. In winter, ski down the surrounding resort trails.
When did the mill stop operating?
Operations officially ceased in 1953 after over thirty years of continuous silver ore processing.
Plan a visit & invite your people →
Further reading: kpcw.org
last checked: 2026-07-20