Mines in Johnson County, Wyoming
442Total
14Active
Johnson County, Wyoming has 442 mine and mineral deposit locations documented in federal records from the USGS and MSHA. 14 of these are currently active mining operations. The most commonly recorded commodity is uranium, with 171 sites. The table below lists all recorded mines in the county with links to individual site details.
All Mines in Johnson County
| Mine | Commodity | Type | Status | Source |
|---|---|---|---|---|
| Arno Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Benton Clay Bentonite Mine & Mill | Bentonite | Surface | Producer | MRDS |
| Bentonite Draw | Bentonite | Underground | Producer | MRDS |
| Buffalo Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Carter Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Chabot Mine | Uranium | Underground | Producer | MRDS |
| Durande Mine | Bentonite | Surface | Producer | MRDS |
| Irigaray Mine | Uranium | Well | Producer | MRDS |
| John Christian Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Kaycee Bentonite Corp #42 | Bentonite | Producer | MRDS | |
| Kaycee Bentonite Mine #100 | Bentonite | Producer | MRDS | |
| Posey Creek Area | Bentonite | Producer | MRDS | |
| South Kaycee Mine | Bentonite | Surface | Producer | MRDS |
| Unnamed | Uranium | Surface | Producer | MRDS |
| Screen 1 | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| 3r Pit | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Alice Mae | Uranium | Surface | Past Producer | MRDS |
| Antelope Group | Uranium | Past Producer | MRDS | |
| Astec Screening Plant | Sand, Common | Surface | Temporarily Idled | MSHA |
| Bpm 76 Creek Mine | Bentonite | Surface | Abandoned | MSHA |
| Bear Lodge | Uranium | Occurrence | MRDS | |
| Betsey Bass Claim | Uranium | Occurrence | MRDS | |
| Big Horn Mine | Manganese, Gold | Past Producer | MRDS | |
| Big Horn Mountains # 1 | Gypsum-Anhydrite | Unknown | MRDS | |
| Big Horn Mountains # 2 | Gypsum-Anhydrite | Unknown | MRDS | |
| Bull Camp Group | Copper | Prospect | MRDS | |
| Chc Portable Crusher #1 | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Crusher #1 | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Cellar Number Four | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Channel Deposit | Uranium | Surface | Unknown | MRDS |
| Charlie Ore Body | Uranium | Surface | Unknown | MRDS |
| Christensen Lease No.2 | Uranium | Surface | Unknown | MRDS |
| City Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Columbus Group | Uranium | Past Producer | MRDS | |
| Cottonwood Creek | Gypsum-Anhydrite | Unknown | MRDS | |
| Craney Draw | Uranium | Surface | Unknown | MRDS |
| Crazy Woman Creek | Bentonite | Unknown | MRDS | |
| Cross H Mesa D Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Cross H Mesa Pit C | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Cross H Pit | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Cross H Pit | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Cross H Pit Number Two # 1 | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Cross H Pit Number Two # 2 | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Crusher 1 Rental | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Crusher Plant #1 | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Daniel's Pit Number Two | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Del | Uranium | Surface | Past Producer | MRDS |
| Del 1 Or Lucky Lady 2 | Uranium | Surface | Past Producer | MRDS |
| Del Linch Claim | Uranium | Occurrence | MRDS | |
| Del Linch Claim | Uranium | Occurrence | MRDS | |
| Desert Queen | Uranium | Occurrence | MRDS | |
| Desert Queen | Uranium | Unknown | MRDS | |
| Dull Knife Dam | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Durand #1 | Bentonite | Occurrence | MRDS | |
| Durand #2 | Bentonite | Occurrence | MRDS | |
| Fabtech Wash Plant | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Faddis-Kennedy | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Figure 8 #3 | Uranium | Occurrence | MRDS | |
| Fisher Industries Plant 42 | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Forest Group | Uranium | Surface | Unknown | MRDS |
| Forked Canyon No 2 | Uranium | Occurrence | MRDS | |
| Frank Claims | Uranium | Occurrence | MRDS | |
| Gashey Pit Number Three | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Gorden Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Greenlee Nos. 1 & 2 | Uranium | Surface | Past Producer | MRDS |
| Gunderman Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| H. N. Thompson | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Hanna 1 | Uranium | Prospect | MRDS | |
| Hanna 4 | Uranium | Occurrence | MRDS | |
| Hannah #1 | Uranium | Occurrence | MRDS | |
| Happy No. 1 | Uranium | Occurrence | MRDS | |
| Harriett Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Hazelton 1- Turnpike | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Hepp Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Horn Venture | Thorium | Occurrence | MRDS | |
| Husen Pit B | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Husen Pit Number A | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Irvine Ranch Area | Uranium | Occurrence | MRDS | |
| Irvine Ranch Area | Uranium | Occurrence | MRDS | |
| J L Masek #1 | Uranium | Placer | Occurrence | MRDS |
| J.l. Masek's Lode #1 | Uranium | Occurrence | MRDS | |
| Jack Christansen | Uranium | Surface | Past Producer | MRDS |
| Jack Rabbit Nos. 1+2 Claims | Uranium | Occurrence | MRDS | |
| Jane 1 | Uranium | Occurrence | MRDS | |
| Jarrard Extension | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Jarrard Rock Pile | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Jarris-Marie #1 | Uranium | Occurrence | MRDS | |
| Jeri Meri Mine | Uranium | Surface | Past Producer | MRDS |
| Jerrie Marie | Uranium | Occurrence | MRDS | |
| Jerrie Marie Prospect | Uranium | Occurrence | MRDS | |
| Jim Dandy | Uranium | Prospect | MRDS | |
| Karl 3 Claim | Uranium | Occurrence | MRDS | |
| Kay Cee Project | Uranium | Surface-Underground | Prospect | MRDS |
| Kaycee Bent Corp #19 | Bentonite | Occurrence | MRDS | |
| Kaycee Bent Corp #34 | Bentonite | Occurrence | MRDS | |
| Kaycee Bent Corp #40 | Bentonite | Occurrence | MRDS | |
| Kaycee Bent Corp #6 | Bentonite | Occurrence | MRDS | |
| Kaycee Bent Corp #7 | Bentonite | Occurrence | MRDS | |
| Kaycee Bent Corp #70 | Bentonite | Occurrence | MRDS | |
| Kaycee Bent Corp #92 | Bentonite | Occurrence | MRDS | |
| Kaycee Bent Corp #96 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #1 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #10 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #11 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #12 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #13 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #14 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #15 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #16 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #17 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #18 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #2 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #20 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #21 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #22 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #23 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #24 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #25 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #26 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #27 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #28 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #29 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #3 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #30 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #31 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #32 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #33 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #35 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #36 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #37 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #38 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #4 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #41 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #43 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #44 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #45 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #46 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #47 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #48 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #49 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #5 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #50 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #51 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #52 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #53 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #54 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #55 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #57 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #58 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #59 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #60 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #61 | Bentonite | Unknown | MRDS | |
| Kaycee Bentonite Corp #62 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #64 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #65 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #66 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #67 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #68 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #71 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #72 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #73 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #74 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #75 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #76 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #77 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #78 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #79 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #8 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #80 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #81 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #82 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #83 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #84 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #85 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #86 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #87 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #88 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #89 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #9 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #90 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #91 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #93 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #94 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #95 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #97 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #98 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #99 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp.#39 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp.#63 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp.#69 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Mine #56 | Bentonite | Occurrence | MRDS | |
| Kaycee Mine | Bentonite | Surface | Intermittent | MSHA |
| Kearney Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Keith Ditch | Bentonite | Past Producer | MRDS | |
| Keith Pit Number One # 1 | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Keith Pit Number One # 2 | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Kel-Roy | Uranium | Surface | Past Producer | MRDS |
| Kell Roy #3 | Uranium | Occurrence | MRDS | |
| Kell Roy #3 Prospect | Uranium | Occurrence | MRDS | |
| Kelly Creek | Gold | Past Producer | MRDS | |
| Kennedy | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Kerr-McGee Stan 7 Or 8 Claims | Uranium | Occurrence | MRDS | |
| Kershner | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Kidd Ranch North End | Bentonite | Occurrence | MRDS | |
| Lem 3 and 4 and Moe 3 and 4 Claims | Uranium | Occurrence | MRDS | |
| Loc. 111 | Uranium | Occurrence | MRDS | |
| Loc. 115 | Uranium | Occurrence | MRDS | |
| Loc. 118 | Uranium | Occurrence | MRDS | |
| Loc. 157 | Uranium | Occurrence | MRDS | |
| Loc. 77. | Uranium | Occurrence | MRDS | |
| Loc. 90 | Uranium | Occurrence | MRDS | |
| Lode #1 | Uranium | Occurrence | MRDS | |
| Lucky 7 | Uranium | Surface | Unknown | MRDS |
| Lucky Three Group | Uranium | Prospect | MRDS | |
| Mangan Mine | Manganese | Surface | Occurrence | MRDS |
| Marton Powder River Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Mayoworth #11 | Bentonite | Unknown | MRDS | |
| Mayworth #5 | Bentonite | Occurrence | MRDS | |
| Mayworth # 10 | Bentonite | Unknown | MRDS | |
| Mayworth #1 | Bentonite | Occurrence | MRDS | |
| Mayworth #2 | Bentonite | Occurrence | MRDS | |
| Mayworth #6 | Bentonite | Occurrence | MRDS | |
| Mayworth #7 & 8 | Bentonite | Occurrence | MRDS | |
| Mayworth #9 | Bentonite | Occurrence | MRDS | |
| Meike Pit Number Three | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Metso Screening Plant | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Microwave Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Middle Fork, Crazy Woman Creek | Gypsum-Anhydrite | Unknown | MRDS | |
| Missy #1 | Uranium | Surface | Past Producer | MRDS |
| Moe 14 | Uranium | Past Producer | MRDS | |
| Morton Pit Number Two | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Mosier Gulch | Limestone, General | Unknown | MRDS | |
| Mountain #1 U Co. | Uranium | Past Producer | MRDS | |
| Muddy Creek | Bentonite | Unknown | MRDS | |
| Muddy Creek Mine | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Muir-Moor Head | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Murphy Creek Area | Bentonite | Underground | Unknown | MRDS |
| Near Beaver Creek | Gypsum-Anhydrite | Unknown | MRDS | |
| North Fork Powder River # 1 | Bentonite | Unknown | MRDS | |
| North Fork, Powder River # 2 | Gypsum-Anhydrite | Unknown | MRDS | |
| North Rock Creek | Gypsum-Anhydrite | Unknown | MRDS | |
| North Tisdale Shaft No 1 | Oil Shale | Underground | Abandoned | MSHA |
| Ole Claims | Uranium | Prospect | MRDS | |
| Opal Claims | Uranium | Occurrence | MRDS | |
| Osborne | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| P Claim | Uranium | Past Producer | MRDS | |
| Portable #1 | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Pass Creek | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Pass Reservoir Area | Limestone, General, Gypsum-Anhydrite | Unknown | MRDS | |
| Pelloux Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Peterson Draw | Bentonite | Surface | Unknown | MRDS |
| Portable Crusher | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Portable Wash Plant #3 | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Powder River Mine | Manganese, Gold | Underground | Past Producer | MRDS |
| Powder River Pass | Copper | Occurrence | MRDS | |
| Quarter Circle 41 Ranch Pit | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Quincy Claims | Uranium | Occurrence | MRDS | |
| Ram #3 & #4 | Uranium | Occurrence | MRDS | |
| Ramsbottom Prospect | Uranium | Occurrence | MRDS | |
| Ramshorn #1 | Uranium | Surface | Prospect | MRDS |
| Ray Claims | Uranium | Underground | Prospect | MRDS |
| Red Fork # 2 | Gypsum-Anhydrite | Unknown | MRDS | |
| Red Fork #1 | Gypsum-Anhydrite | Unknown | MRDS | |
| Red Fork Powder River Area # 1 | Gypsum-Anhydrite | Unknown | MRDS | |
| Red Fork Powder River Area #2 | Gypsum-Anhydrite | Unknown | MRDS | |
| Rhodds Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Roe Bros Group | Gold, Copper | Occurrence | MRDS | |
| Sad Sack 6 | Uranium | Occurrence | MRDS | |
| Sad Sack Claim | Uranium | Occurrence | MRDS | |
| Sad Sack Claims | Uranium, Selenium | Occurrence | MRDS | |
| Scale Number One | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Schiffer | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Schmidt Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Screen #4 | Bentonite | Surface | Intermittent | MSHA |
| Screen 1 | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Shambaugh Number Two | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Shell Creek | Gypsum-Anhydrite | Occurrence | MRDS | |
| Shell Creek | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sisters Hill | Gypsum-Anhydrite | Unknown | MRDS | |
| Site B | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Skiles Pit Number One | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Skiles-Reno Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Slate Ridge #1 | Bentonite | Occurrence | MRDS | |
| Slate Ridge #10 | Bentonite | Occurrence | MRDS | |
| Slate Ridge #3 | Bentonite | Occurrence | MRDS | |
| Slate Ridge #5 | Bentonite | Occurrence | MRDS | |
| Slate Ridge #7 | Bentonite | Occurrence | MRDS | |
| Slate Ridge #8 | Bentonite | Occurrence | MRDS | |
| Slate Ridge #9 | Bentonite | Occurrence | MRDS | |
| Slate Ridge Number Eleven | Bentonite | Occurrence | MRDS | |
| Slate Ridge Number Four | Bentonite | Occurrence | MRDS | |
| Slate Ridge Number Six | Bentonite | Occurrence | MRDS | |
| Slate Ridge Number Two | Bentonite | Occurrence | MRDS | |
| Smith Pit Number One | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Snakebite No.2 | Uranium | Surface | Past Producer | MRDS |
| Soldiers & Sailors Pit Number Three | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| South Fork Crazy Woman | Gypsum-Anhydrite | Unknown | MRDS | |
| South Fork Powder River | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| South Fork, Crazy Woman Creek | Bentonite | Past Producer | MRDS | |
| South Peak Mining Property | Uranium | Surface | Past Producer | MRDS |
| Spring Creek | Gypsum-Anhydrite | Unknown | MRDS | |
| State Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Stone Yard #1 | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Sunset Claim Group | Uranium | Surface | Prospect | MRDS |
| Sunset Mines | Uranium | Past Producer | MRDS | |
| T.a. Ranch Pit | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Taylor | Uranium | Surface | Unknown | MRDS |
| Taylor | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Taylor Prospect | Manganese | Occurrence | MRDS | |
| Thompson | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Thompson Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Tisdale # 1 | Bentonite | Occurrence | MRDS | |
| Tisdale # 2 | Bentonite | Occurrence | MRDS | |
| Tisdale # 3 | Bentonite | Occurrence | MRDS | |
| Tisdale # 4 | Bentonite | Occurrence | MRDS | |
| Tisdale # 5 | Bentonite | Occurrence | MRDS | |
| Tisdale # 6 | Bentonite | Occurrence | MRDS | |
| Tisdale # 7 | Bentonite | Occurrence | MRDS | |
| Tisdale # 8 | Bentonite | Occurrence | MRDS | |
| Tisdale # 9 | Bentonite | Occurrence | MRDS | |
| Tisdale #10 | Bentonite | Occurrence | MRDS | |
| Tisdale #11 | Bentonite | Occurrence | MRDS | |
| Tom #1 | Oil Shale | Underground | Abandoned | MSHA |
| Top Hand Group | Copper | Occurrence | MRDS | |
| Track Jaw | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Tyjil No.1 | Uranium | Surface | Past Producer | MRDS |
| Ullery | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Ullery Pit | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Ullery Pit Number Three | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Vanadium, Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Processing Plant | Occurrence | MRDS |
| Unknown | Gypsum-Anhydrite | Unknown | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Bentonite | Unknown | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Surface | Unknown | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Magnesite | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Unknown | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Gypsum-Anhydrite | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Gypsum-Anhydrite | Occurrence | MRDS | |
| Unknown | Stone, Crushed/Broken | Prospect | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Uranium | Past Producer | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Manganese | Prospect | MRDS | |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Bentonite | Prospect | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Bentonite | Prospect | MRDS | |
| Unknown | Manganese | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Past Producer | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Bentonite | Unknown | MRDS | |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Underground | Unknown | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Manganese | Occurrence | MRDS | |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Bentonite | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Stone, Crushed/Broken | Prospect | MRDS | |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown (sample Anomaly #248) | Uranium | Occurrence | MRDS | |
| Unknown No.1 | Uranium | Surface | Past Producer | MRDS |
| Unknown No.2 | Uranium | Surface | Past Producer | MRDS |
| Unknown No.3 | Uranium | Surface | Past Producer | MRDS |
| Unknown No.4 | Uranium | Surface | Past Producer | MRDS |
| Unknown-Kerr-McGee Prop. | Uranium | Surface | Past Producer | MRDS |
| Unnamed | Uranium | Occurrence | MRDS | |
| Wcm Mobile Trommel | Sand, Common | Surface | Temporarily Idled | MSHA |