Mines in Natrona County, Wyoming
403Total
39Active
Natrona County, Wyoming has 403 mine and mineral deposit locations documented in federal records from the USGS and MSHA. 39 of these are currently active mining operations. The most commonly recorded commodity is uranium, with 181 sites. The table below lists all recorded mines in the county with links to individual site details.
All Mines in Natrona County
| Mine | Commodity | Type | Status | Source |
|---|---|---|---|---|
| Casper Plant | Bentonite | Facility | Active | MSHA |
| Ht Plant | Bentonite | Facility | Active | MSHA |
| Mills Plant | Bentonite | Facility | Active | MSHA |
| Aljob Mines | Uranium | Producer | MRDS | |
| Benton Clay Co Mill | Bentonite | Processing Plant | Producer | MRDS |
| Boels-Rimrock Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Boundary Overstrip of Tee Mine #1 | Uranium | Surface | Producer | MRDS |
| Boundary Overstrip of Tee Mine No.2 | Uranium | Surface | Producer | MRDS |
| Bradshaw Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Buss Mines | Uranium | Producer | MRDS | |
| Casper Concrete Pit & Plant | Sand and Gravel, Construction | Surface | Producer | MRDS |
| East Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Globe Mill (Facility) | Uranium | Processing Plant | Producer | MRDS |
| Hidebrand Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Hope No 1 | Uranium | Surface | Producer | MRDS |
| Hope No.2 | Uranium | Surface | Producer | MRDS |
| Kaycee Clay Mine | Bentonite | Processing Plant | Producer | MRDS |
| Kaycee Mine | Bentonite | Surface | Producer | MRDS |
| Last Chance | Uranium | Producer | MRDS | |
| Lathrop L-3 Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Lower Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Midwest-Thoeming & Wakem | Clay | Surface | Producer | MRDS |
| Nine Mile Lake Project | Uranium | Producer | MRDS | |
| Nine Mile Lake Project Processing Plant | Uranium | Processing Plant | Producer | MRDS |
| Pat N' Bill Mine | Uranium | Producer | MRDS | |
| Pat Underground | Uranium | Underground | Producer | MRDS |
| Pay-Aljob Mine | Uranium | Surface | Producer | MRDS |
| Ran-Rex | Uranium | Producer | MRDS | |
| Rim Rock Ranch Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Soap Creek #1 | Bentonite | Surface-Underground | Producer | MRDS |
| Soap Creek #2 | Bentonite | Surface-Underground | Producer | MRDS |
| Star #1 | Uranium | Producer | MRDS | |
| State Land Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Unknown | Uranium | Producer | MRDS | |
| Unknown | Uranium | Producer | MRDS | |
| Valley-Dean Mine | Uranium | Producer | MRDS | |
| Veca Mine | Uranium | Producer | MRDS | |
| Wentz Mine | Uranium | Producer | MRDS | |
| West Area Pit | Uranium | Surface | Producer | MRDS |
| Advanced Screenplant | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Airstrike | Uranium | Prospect | MRDS | |
| Al-Job Mine | Uranium | Occurrence | MRDS | |
| Alcova Area | Gypsum-Anhydrite | Well | Unknown | MRDS |
| Alcova Hot Spring | Geothermal | Surface | Unknown | MRDS |
| Alich #9 Claim | Uranium | Surface-Underground | Prospect | MRDS |
| Aljob #10 | Uranium | Surface | Past Producer | MRDS |
| Aljob #12 | Uranium | Surface | Past Producer | MRDS |
| Aljob #9 | Uranium | Past Producer | MRDS | |
| Aljob No. 9 | Uranium | Occurrence | MRDS | |
| Allie Claims | Thorium | Occurrence | MRDS | |
| B-1 | Uranium | Past Producer | MRDS | |
| B-2 Pit | Uranium | Surface | Past Producer | MRDS |
| Bacon | Uranium | Surface | Prospect | MRDS |
| Baker Nos. 3, 4, and 5 | Uranium | Underground | Prospect | MRDS |
| Bates Creek | Uranium | Surface | Unknown | MRDS |
| Bates Creek Area #1 | Bentonite | Surface-Underground | Prospect | MRDS |
| Bates Creek Area No 2 | Bentonite | Surface-Underground | Prospect | MRDS |
| Beaver Creek | Gypsum-Anhydrite | Well | Unknown | MRDS |
| Bengal Mars No.1 | Uranium | Surface | Past Producer | MRDS |
| Bengal Mine | Uranium | Occurrence | MRDS | |
| Berthaton Claims | Halite, Sodium Carbonate, Salt, Sodium Sulfate | Surface | Prospect | MRDS |
| Big Red Creek | Gypsum-Anhydrite | Well | Unknown | MRDS |
| Black Cat Claims | Uranium | Surface | Prospect | MRDS |
| Black Cat Group | Uranium | Occurrence | MRDS | |
| Black Mountain Spodumene Prospect | Lithium | Well | Occurrence | MRDS |
| Blackstone No. 5 Mine | Uranium | Surface | Unknown | MRDS |
| Blackstone No. 51 (Unverified) | Uranium | Surface | Past Producer | MRDS |
| Blue Hill Deposit | Bentonite | Surface-Underground | Prospect | MRDS |
| Boss Mine | Uranium | Surface | Unknown | MRDS |
| Boundary Overstrip of Fed-Amer.mine | Uranium | Surface | Past Producer | MRDS |
| Bountiful #1 and #9 | Uranium | Surface | Past Producer | MRDS |
| Bountiful Number 9 | Uranium | Past Producer | MRDS | |
| Bountiful Number 9-B | Uranium | Surface | Past Producer | MRDS |
| Bridge No. 1 | Uranium | Occurrence | MRDS | |
| Bridger Trail No. 1 | Uranium | Surface | Past Producer | MRDS |
| Burnt Wagon Draw | Uranium | Surface | Unknown | MRDS |
| Buss D & F | Uranium | Past Producer | MRDS | |
| Buss No. 6 | Uranium | Surface | Prospect | MRDS |
| Calek No 53 and 55 | Uranium | Surface | Prospect | MRDS |
| Casper Creek | Uranium | Surface | Unknown | MRDS |
| Casper Mountain Mine | Chromium | Surface | Prospect | MRDS |
| Casper Mtn Asbestos Deposits | Asbestos | Surface-Underground | Past Producer | MRDS |
| Casper Pit | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Cedar Breaks #1 | Uranium | Occurrence | MRDS | |
| Cedarapids Screen | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Clarkson Hill | Titanium-Heavy Minerals | Surface | Occurrence | MRDS |
| Clarkson Hill Uranium Project | Uranium | Well | Prospect | MRDS |
| Coalbanc No. 1 | Uranium | Occurrence | MRDS | |
| Coalbank Hills | Titanium | Surface | Occurrence | MRDS |
| Corral Creek | Gypsum-Anhydrite | Well | Unknown | MRDS |
| Cottonwood Creek | Bentonite | Occurrence | MRDS | |
| Crusher #1 | Crushed, Broken Stone NEC | Surface | Abandoned | MSHA |
| Crusher #2 | Crushed, Broken Stone NEC | Surface | Temporarily Idled | MSHA |
| Crusher #4 | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Crusher #5 | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Crusher #6 | Crushed, Broken Limestone NEC | Surface | Intermittent | MSHA |
| Crusher #7 | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Crusher #8 | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Csg No. 1 | Uranium | Occurrence | MRDS | |
| Cyclone Ridge | Uranium | Occurrence | MRDS | |
| D-8 Pit | Uranium | Surface | Unknown | MRDS |
| Deacon's Prayer | Uranium | Occurrence | MRDS | |
| Diamond M | Uranium | Occurrence | MRDS | |
| Dick #1 | Uranium | Occurrence | MRDS | |
| Dick Claims | Uranium | Occurrence | MRDS | |
| Dick No. 5 | Uranium | Surface | Prospect | MRDS |
| Dick No. 6 | Uranium | Surface | Occurrence | MRDS |
| Doc No. 13 | Uranium | Occurrence | MRDS | |
| Dry Lake | Uranium | Surface-Underground | Prospect | MRDS |
| Dry Lake Claim | Uranium | Occurrence | MRDS | |
| Dry Lake and Zero Claims | Uranium | Occurrence | MRDS | |
| Durner & Keys | Unknown | MRDS | ||
| Dyper Bar Mac #7 | Uranium | Occurrence | MRDS | |
| Dyper-Bar-Mac Group | Uranium | Occurrence | MRDS | |
| El Jay | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| First Water Gravel Pit A | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Fold & Go Screen | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Gay Claim | Uranium | Prospect | MRDS | |
| Goat Mountain Area | Surface | Occurrence | MRDS | |
| Goose Egg #1 | Bentonite | Occurrence | MRDS | |
| Goose Egg #2 | Gypsum-Anhydrite | Prospect | MRDS | |
| Green Hill Deposit | Asbestos | Prospect | MRDS | |
| Hemingway #1 | Bentonite | Occurrence | MRDS | |
| Hemingway #10 | Bentonite | Occurrence | MRDS | |
| Hemingway #11 | Bentonite | Occurrence | MRDS | |
| Hemingway #12 | Bentonite | Occurrence | MRDS | |
| Hemingway #13 | Bentonite | Occurrence | MRDS | |
| Hemingway #14 | Bentonite | Occurrence | MRDS | |
| Hemingway #15 | Bentonite | Occurrence | MRDS | |
| Hemingway #16 | Bentonite | Occurrence | MRDS | |
| Hemingway #17 | Bentonite | Occurrence | MRDS | |
| Hemingway #18 | Bentonite | Occurrence | MRDS | |
| Hemingway #19 | Bentonite | Occurrence | MRDS | |
| Hemingway #2 | Bentonite | Occurrence | MRDS | |
| Hemingway #20 | Bentonite | Occurrence | MRDS | |
| Hemingway #21 | Bentonite | Occurrence | MRDS | |
| Hemingway #22 | Bentonite | Occurrence | MRDS | |
| Hemingway #23 | Bentonite | Occurrence | MRDS | |
| Hemingway #24 | Bentonite | Occurrence | MRDS | |
| Hemingway #25 | Bentonite | Occurrence | MRDS | |
| Hemingway #26 | Bentonite | Occurrence | MRDS | |
| Hemingway #27 | Bentonite | Occurrence | MRDS | |
| Hemingway #28 | Bentonite | Occurrence | MRDS | |
| Hemingway #29 | Bentonite | Occurrence | MRDS | |
| Hemingway #3 | Bentonite | Occurrence | MRDS | |
| Hemingway #30 | Bentonite | Occurrence | MRDS | |
| Hemingway #31 | Bentonite | Occurrence | MRDS | |
| Hemingway #32 | Bentonite | Occurrence | MRDS | |
| Hemingway #33 | Bentonite | Occurrence | MRDS | |
| Hemingway #4 | Bentonite | Occurrence | MRDS | |
| Hemingway #5 | Bentonite | Occurrence | MRDS | |
| Hemingway #6 | Bentonite | Occurrence | MRDS | |
| Hemingway #7 | Bentonite | Occurrence | MRDS | |
| Hemingway #8 | Bentonite | Occurrence | MRDS | |
| Hemingway #9 | Bentonite | Occurrence | MRDS | |
| Hiland Channel Deposit | Uranium | Surface | Unknown | MRDS |
| Jci K200-6203cc | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Jackneese No. 9 | Uranium | Surface | Prospect | MRDS |
| Kaycee Bentonite Corp #1 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #2 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #3 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp #4 | Bentonite | Occurrence | MRDS | |
| Kaycee Bentonite Corp. #5 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End #4 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End #1 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End #2 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End #3 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End #31 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End #5 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End #6 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End #7 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End#10 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End#11 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End#12 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End#16 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End#17 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End#18 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End#19 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch North End#8 | Bentonite | Occurrence | MRDS | |
| Kidd Ranch/south End#27 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchnorth End#13 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchnorth End#14 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchnorth End#20 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchnorth End#21 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchnorth End#22 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchnorth End#23 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchnorth End#24 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchnorth End#25 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchnorth End#26 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchnorth End#27 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchnorth End#28 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchnorth End#29 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchnorth End#30 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchnorth End#9 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#1 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#10 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#11 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#12 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#13 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#14 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#15 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#16 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#17 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#18 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#19 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#2 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#20 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#21 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#22 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#23 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#24 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#25 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#26 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#28 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#29 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#3 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#30 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#4 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#5 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#6 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#7 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#8 | Bentonite | Occurrence | MRDS | |
| Kidd Ranchsouth End#9 | Bentonite | Occurrence | MRDS | |
| Koch Feldspar Deposit | Feldspar | Surface-Underground | Past Producer | MRDS |
| Koch Gold and Silver Deposit | Gold | Occurrence | MRDS | |
| Koch Hematite Deposit On Casper Mountain | Iron | Occurrence | MRDS | |
| Koch Siliceous Iron Prospect | Iron | Occurrence | MRDS | |
| Koch's Manganese Deposit | Manganese | Underground | Occurrence | MRDS |
| Kolberg Portable Screen | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Last Chance | Uranium | Occurrence | MRDS | |
| Lee Mine | Uranium | Surface | Unknown | MRDS |
| Lisbon | Uranium | Past Producer | MRDS | |
| Lisbon | Uranium | Past Producer | MRDS | |
| Locality 13 | Uranium | Occurrence | MRDS | |
| Lyberger Claims | Uranium | Occurrence | MRDS | |
| M F and K No. 12 | Uranium | Occurrence | MRDS | |
| Mars #1 | Uranium | Past Producer | MRDS | |
| Meyers | Uranium | Occurrence | MRDS | |
| Middle Fork | Uranium | Surface | Unknown | MRDS |
| Morgan Deposit | Sodium Sulfate | Prospect | MRDS | |
| Muddy Creek | Gypsum-Anhydrite | Well | Unknown | MRDS |
| New York & Philadelphia Claims | Sodium Carbonate, Sodium Sulfate, Salt | Surface | Prospect | MRDS |
| Niball No. 11 and 12 | Uranium | Occurrence | MRDS | |
| Oftedal Crusher #1 | Gypsum | Surface | Temporarily Idled | MSHA |
| Omaha Soda Deposit | Sodium Sulfate, Sodium Carbonate, Salt | Surface | Past Producer | MRDS |
| Portable Screening Plant | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Pat No. 2 | Uranium | Prospect | MRDS | |
| Pay #11 | Uranium | Occurrence | MRDS | |
| Pay #5 #6 #3 | Uranium | Past Producer | MRDS | |
| Pay #7 | Uranium | Surface-Underground | Prospect | MRDS |
| Pay #7, #8 | Uranium | Occurrence | MRDS | |
| Pay #8 | Uranium | Surface-Underground | Prospect | MRDS |
| Pay #9 | Uranium | Occurrence | MRDS | |
| Pay #9 | Uranium | Surface-Underground | Past Producer | MRDS |
| Pay Nos. 8 & 9 | Uranium | Surface | Past Producer | MRDS |
| Phyllis | Uranium | Occurrence | MRDS | |
| Phyllis #15 | Uranium | Surface | Prospect | MRDS |
| Pine Tree | Uranium | Surface | Prospect | MRDS |
| Pine Tree No. 2 and No. 4 | Uranium | Occurrence | MRDS | |
| Pipe Dream | Uranium | Occurrence | MRDS | |
| Pipe Dream Claims | Uranium | Occurrence | MRDS | |
| Pit A-10 | Uranium | Surface | Past Producer | MRDS |
| Pit A-2 | Uranium | Past Producer | MRDS | |
| Pit A-5 | Uranium | Past Producer | MRDS | |
| Pit A-7 & A-8 | Uranium | Past Producer | MRDS | |
| Pit A-9 | Uranium | Surface | Past Producer | MRDS |
| Pit B-2 | Uranium | Past Producer | MRDS | |
| Pit C-3 | Uranium | Surface | Past Producer | MRDS |
| Pix #1,#2,#9,#9-A & #9-B | Uranium | Past Producer | MRDS | |
| Pix No. 7 | Uranium | Underground | Prospect | MRDS |
| Platte Canyon | Magnesite | Occurrence | MRDS | |
| Poison Creek | Uranium | Surface | Unknown | MRDS |
| Poison Spider | Titanium-Heavy Minerals | Surface | Occurrence | MRDS |
| Pratt Sodium Mine | Sodium Sulfate | Surface | Past Producer | MRDS |
| Ranger #1 | Uranium | Occurrence | MRDS | |
| Rani-Rex | Uranium | Surface | Unknown | MRDS |
| Ranrex Mine | Uranium | Occurrence | MRDS | |
| Ranrex Mine | Uranium | Occurrence | MRDS | |
| Rattlesnake Hills #1 | Sulfur | Occurrence | MRDS | |
| Rattlesnake Hills #2 | Bentonite | Occurrence | MRDS | |
| Rattlesnake Hills Gold Property | Gold | Prospect | MRDS | |
| Rattlesnake Mountains | Gypsum-Anhydrite | Well | Unknown | MRDS |
| Rawlins Draw | Pumice | Well | Unknown | MRDS |
| Recycle | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Red Buttes | Gypsum-Anhydrite | Well | Unknown | MRDS |
| Ridge #1 | Uranium | Surface | Past Producer | MRDS |
| Rl #1 | Uranium | Prospect | MRDS | |
| Rox | Uranium | Surface | Past Producer | MRDS |
| Russ 8 Claim | Uranium | Surface | Unknown | MRDS |
| Russ Mine | Uranium | Surface | Unknown | MRDS |
| Russ-Buss | Uranium | Surface | Unknown | MRDS |
| Sagebrush No. 15 | Uranium | Surface | Occurrence | MRDS |
| Screen #3 | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Shot Nos 9 and 10 | Uranium | Occurrence | MRDS | |
| Skyline Claims | Uranium | Surface | Unknown | MRDS |
| Smith Creek Deposit | Asbestos | Prospect | MRDS | |
| Southwest of Casper | Bentonite | Occurrence | MRDS | |
| Split Rock Mine | Uranium | Surface | Unknown | MRDS |
| Star 7 | Uranium | Past Producer | MRDS | |
| Star No. 3 | Uranium | Occurrence | MRDS | |
| Star No.1-A | Uranium | Surface | Past Producer | MRDS |
| Star No.1-B | Uranium | Surface | Past Producer | MRDS |
| Steele Formation | Bentonite | Prospect | MRDS | |
| Sun Ray Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| T Bone Mine | Uranium | Surface | Past Producer | MRDS |
| Tee | Uranium | Past Producer | MRDS | |
| Tee #2 | Uranium | Past Producer | MRDS | |
| Tee #3 | Uranium | Surface-Underground | Prospect | MRDS |
| Tee #4 | Uranium | Surface-Underground | Prospect | MRDS |
| Tee Claims | Uranium | Past Producer | MRDS | |
| Teton | Uranium | Occurrence | MRDS | |
| Tolsa Mines | Bentonite | Surface | Temporarily Idled | MSHA |
| Tolsa Wyoming Bentonite Plant | Bentonite | Facility | Temporarily Idled | MSHA |
| Twin Arrow | Uranium | Surface | Past Producer | MRDS |
| Twin Buttes | Gypsum-Anhydrite | Well | Unknown | MRDS |
| Two Pits | Uranium | Surface | Past Producer | MRDS |
| U.m.s.i.n.c. Claim #8 | Uranium | Occurrence | MRDS | |
| Unidentified Occurrence | Iron | Occurrence | MRDS | |
| Union Carbide Corp. Mill (Facility) | Uranium | Processing Plant | 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 | 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 | Pumice | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Bentonite | Occurrence | MRDS | |
| Unknown | Manganese | Occurrence | MRDS | |
| Unknown | Sodium Carbonate, Sodium Sulfate | Occurrence | MRDS | |
| Unknown | Bentonite | Surface-Underground | Prospect | MRDS |
| Unknown | Bentonite | Prospect | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Fluorine-Fluorite | Occurrence | MRDS | |
| Unknown | Magnesite | Occurrence | MRDS | |
| Unknown | Bentonite | Surface-Underground | Prospect | MRDS |
| Unknown | Bentonite | Surface-Underground | Prospect | MRDS |
| Unknown | Semiprecious Gemstone | Occurrence | MRDS | |
| Unknown | Manganese | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Semiprecious Gemstone | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Vanadium | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Gypsum-Anhydrite | Occurrence | MRDS | |
| Unknown | Iron | Occurrence | MRDS | |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Bentonite | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Uranium | Past Producer | MRDS | |
| Unknown | Bentonite | Surface-Underground | Prospect | MRDS |
| Unknown | Uranium | Prospect | MRDS | |
| Unknown | Uranium | Past Producer | MRDS | |
| Unknown | Bentonite | Surface-Underground | Prospect | MRDS |
| Unknown | Uranium | Surface | Unknown | MRDS |
| Unknown | Bentonite | Prospect | MRDS | |
| Unknown | Fire Clay (Refractory) | Occurrence | MRDS | |
| Unknown | Bentonite | Occurrence | MRDS | |
| Unknown | Vermiculite | Well | Unknown | MRDS |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Vermiculite | Past Producer | MRDS | |
| Unknown | Iron | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Bentonite | Prospect | MRDS | |
| Unknown | Uranium | Surface | Unknown | MRDS |
| Unknown | Zeolites | Well | Unknown | MRDS |
| Unknown | Gypsum-Anhydrite | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Gypsum-Anhydrite | Occurrence | MRDS | |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Bentonite | Prospect | MRDS | |
| Unknown | Mica | Occurrence | MRDS | |
| Unknown | Sodium Sulfate | Surface | Occurrence | MRDS |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unknown | Pumice | Occurrence | MRDS | |
| Unknown | Uranium | Surface | Past Producer | MRDS |
| Unknown | Magnesite | Occurrence | MRDS | |
| Unknown | Bentonite | Occurrence | MRDS | |
| Unknown | Bentonite | Well | Unknown | MRDS |
| Unknown | Uranium | Occurrence | MRDS | |
| Unnamed | Pumice | Occurrence | MRDS | |
| Uranebow No. 4 | Uranium | Prospect | MRDS | |
| Veca | Uranium | Past Producer | MRDS | |
| Vermiculite Sales Corp Deposit #1 | Kaolin, Vermiculite | Surface-Underground | Past Producer | MRDS |
| Vermiculite Sales Corp Deposit #2 | Vermiculite | Surface-Underground | Past Producer | MRDS |
| Verna Bell Claim | Uranium | Prospect | MRDS | |
| Verne Bell Claims | Uranium | Occurrence | MRDS | |
| Verua Sell ? | Uranium | Surface | Prospect | MRDS |
| Walt No. 3 | Uranium | Prospect | MRDS | |
| Wentz Mine | Uranium | Surface | Unknown | MRDS |
| Wilmington and Wilkesbarre Deposits | Sodium Carbonate, Sodium Sulfate, Salt | Surface | Prospect | MRDS |
| Windy Kay No. 9 | Uranium | Occurrence | MRDS | |
| Xlnt No. 1 | Uranium | Occurrence | MRDS |