Nevada State Route 320
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| State Route 320 |
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| Caselton Mine Loop | |||||||||
| Length: | 10.674 mi[1] (17.178 km) | ||||||||
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| Formed: | 31 December 1991 | ||||||||
| Southeast end: | |||||||||
| Northwest end: | |||||||||
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State Route 320, the Caselton Mine Loop, is an outer loop route of U.S. Route 93 (the inner loop being State Route 321 through Pioche, Nevada.) It is a state highway in Lincoln County, Nevada, USA, connecting US 93 on both sides through the Caselton Mining District.

