Question: State Route 209 (SR-209) is a state highway in the U.S. state of Utah, following 9000 South and other east–west streets south of Salt Lake City, It connects I-15 in Sandy with the ski areas of Little Cottonwood Canyon, and, once an extension is complete, with which mine, more commonly known as Kennecott Copper Mine among locals, is an open-pit mining operation extracting a large porphyry copper deposit southwest of Salt Lake City, Utah?
Sentence (from "Utah State Route 210"): The 13.62 mi (21.92 km) highway straddles the southeastern edge of the Salt Lake Valley before it enters the mouth of Little Cottonwood Canyon.
Relevant evidence: No