The 20 mile long “super-tunnel,” to be bored through the granite of the Wasatch Mountains by TBMs from Draper to Park City would make the 6.5 million tons of ore accessible. I would facilitate the mining og silver valued at nearly $270 million dollars. The super-tunnel would also provide water to the Salt Lake Valley

The cost of the tunnel is estimated about 500 million dollars.

https://www.parkrecord.com/news/way-we-were-the-dream-of-the-wasatch-super-tunnel/