Mines in Lewis and Clark County, Montana
691Total
30Active
Lewis and Clark County, Montana has 691 mine and mineral deposit locations documented in federal records from the USGS and MSHA. 30 of these are currently active mining operations. The most commonly recorded commodity is construction sand and gravel, with 16 sites. The table below lists all recorded mines in the county with links to individual site details.
All Mines in Lewis and Clark County
| Mine | Commodity | Type | Status | Source |
|---|---|---|---|---|
| Ironside Stone Works Quarry | Dimension Slate | Surface | Active | MSHA |
| Portable 45 200 | Construction Sand and Gravel | Surface | Active | MSHA |
| Anson Slate Quarry | Stone, Dimension | Surface | Producer | MRDS |
| Big Sky Ready Mix Sand | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Blackfoot Mine | Gold | Producer | MRDS | |
| Blue Cloud Mining Co. Property | Gold | Producer | MRDS | |
| Dry Gulch, Golden Messenger | Gold, Silver | Producer | MRDS | |
| Eldorado Bar | Sapphire, Gold | Placer | Producer | MRDS |
| Eldorado Sapphire Mine | Sapphire | Placer | Producer | MRDS |
| Free Speech Mine | Lead, Silver | Producer | MRDS | |
| French Bar Placer | Sapphire, Gold | Placer | Producer | MRDS |
| French Bar Placer | Sapphire | Placer | Producer | MRDS |
| French Bar Underwater | Gemstone | Offshore | Producer | MRDS |
| Helena Hot Spring | Geothermal | Geothermal | Producer | MRDS |
| Helena Limestone Mine | Limestone, General | Producer | MRDS | |
| Helena Sand and Gravel | Sand and Gravel, Construction | Producer | MRDS | |
| Humdinger Mine | Gold, Copper, Silver | Producer | MRDS | |
| Kaiser Cement | Limestone, General | Processing Plant | Producer | MRDS |
| Krasny Gulch Placer | Gold | Producer | MRDS | |
| Lincoln Gulch | Gold | Producer | MRDS | |
| Lincoln Road Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Lovestone Placer | Gold | Placer | Producer | MRDS |
| Monte Cristo Mine | Gold, Copper, Silver | Producer | MRDS | |
| Ottawa | Tungsten | Surface-Underground | Producer | MRDS |
| Pretty Girl Placer | Gold | Placer | Producer | MRDS |
| Sam Gaty Mine | Silver, Gold | Producer | MRDS | |
| Unknown | Kaolin | Producer | MRDS | |
| Unknown | Talc-Soapstone | Producer | MRDS | |
| Wolf Creek District | Copper | Producer | MRDS | |
| York, Trout Creek, Missouri | Gold | Producer | MRDS | |
| (Facility) East Helena Lead Smelter | Lead, Smelter | Processing Plant | Plant | MRDS |
| Acme Placer | Gold | Occurrence | MRDS | |
| Adams Mine | Barium-Barite | Prospect | MRDS | |
| Adele Mine | Silver | Surface | Past Producer | MRDS |
| Adeline Mine | Lead | Underground | Prospect | MRDS |
| Adiadene Claim | Lead, Silver | Occurrence | MRDS | |
| Ajax Mine | Gold, Silver | Past Producer | MRDS | |
| Ajax Mine | Gold | Past Producer | MRDS | |
| Ajax Mine | Gold | Underground | Unknown | MRDS |
| Ajax Mine | Gold | Underground | Past Producer | MRDS |
| Alice Lode | Prospect | MRDS | ||
| Alice Lode | Lead, Silver | Occurrence | MRDS | |
| Alice Lode | Lead | Unknown | MRDS | |
| All Placer | Gold | Placer | Past Producer | MRDS |
| Alley | Underground | Prospect | MRDS | |
| Alley Mine | Lead, Silver | Occurrence | MRDS | |
| Alpha Mine | Gold | Occurrence | MRDS | |
| American Bar | Gold | Placer | Occurrence | MRDS |
| American Boy Mine | Gold | Surface-Underground | Past Producer | MRDS |
| American Flag | Underground | Prospect | MRDS | |
| American Flag Mine | Silver, Lead | Past Producer | MRDS | |
| American Flag Mine | Gold | Past Producer | MRDS | |
| Anaconda | Underground | Past Producer | MRDS | |
| Anderson Prospect | Gold | Past Producer | MRDS | |
| Anderson Prospect | Tungsten | Occurrence | MRDS | |
| Andrew Brown | Gold | Underground | Past Producer | MRDS |
| Ariadene Claim | Lead, Silver | Occurrence | MRDS | |
| Ariadene Claim | Lead | Past Producer | MRDS | |
| Armstrong | Underground | Past Producer | MRDS | |
| Armstrong Mine | Silver, Lead | Past Producer | MRDS | |
| Armstrong Mine | Lead | Underground | Past Producer | MRDS |
| Auchard Creek Titanium/iron Occurrence | Occurrence | MRDS | ||
| Austin District | Gold, Copper, Silver | Past Producer | MRDS | |
| Babe Prospect | Lead | Occurrence | MRDS | |
| Bachelor Gold Mining Company | Gold | Underground | Unknown | MRDS |
| Badger Mine | Gold | Occurrence | MRDS | |
| Bald Butte Mine | Molybdenum Ore | Surface | Abandoned | MSHA |
| Bald Butte Mine | Gold, Silver | Past Producer | MRDS | |
| Baldy Mountain Claims | Gold | Underground | Past Producer | MRDS |
| Baldy Smith Mine | Silver, Lead | Occurrence | MRDS | |
| Baldy Smith Mine | Iron | Past Producer | MRDS | |
| Barry Hatler | Gold Ore | Facility | Intermittent | MSHA |
| Beatrice | Underground | Past Producer | MRDS | |
| Beatrice Mine | Gold, Silver | Past Producer | MRDS | |
| Beaver Meadow Lead-Zinc Occurrence | Occurrence | MRDS | ||
| Beaver Meadows | Lead | Underground | Prospect | MRDS |
| Bell Boy Mine | Gold | Past Producer | MRDS | |
| Bell Boy Mine | Gold | Past Producer | MRDS | |
| Belmont Mine | Gold, Silver | Past Producer | MRDS | |
| Belmont Mine | Gold | Underground | Prospect | MRDS |
| Betsy Ross Mine | Silver, Lead, Gold | Occurrence | MRDS | |
| Betsy Ross Mine | Gold | Underground | Past Producer | MRDS |
| Big Ben | Feldspar | Occurrence | MRDS | |
| Big Blackfoot | Silver, Lead, Gold | Surface | Plant | MRDS |
| Big Copper Lode | Copper | Occurrence | MRDS | |
| Big Ox | Underground | Prospect | MRDS | |
| Big Ox Mine | Lead | Occurrence | MRDS | |
| Bissonette Mine | Copper, Silver | Past Producer | MRDS | |
| Bissonette Mine | Silver | Underground | Unknown | MRDS |
| Black Sand Placer | Gold | Occurrence | MRDS | |
| Black Sand Placer | Gold | Placer | Unknown | MRDS |
| Black Watch | Gold | Underground | Past Producer | MRDS |
| Blue Bird Copper and Silver Mining Co. | Silver, Lead | Past Producer | MRDS | |
| Blue Bird Mine | Lead, Silver | Past Producer | MRDS | |
| Blue Bird Mine | Copper | Surface-Underground | Prospect | MRDS |
| Blue Cloud | Tungsten, Molybdenum | Occurrence | MRDS | |
| Blue Cloud | Tungsten | Occurrence | MRDS | |
| Blue Cloud District | Lead, Silver | Past Producer | MRDS | |
| Blue Cloud Mining Co | Gold | Occurrence | MRDS | |
| Blue Jay | Iron | Occurrence | MRDS | |
| Blue Jay Mine | Lead, Copper, Silver | Past Producer | MRDS | |
| Blue Jay Mine | Iron | Underground | Past Producer | MRDS |
| Blue Jay Placer | Gold | Occurrence | MRDS | |
| Blue Jay Placer | Gold | Placer | Unknown | MRDS |
| Blue Star | Gold | Placer | Unknown | MRDS |
| Blue Star Placer | Gold | Occurrence | MRDS | |
| Bluebird Co | Lead | Underground | Past Producer | MRDS |
| Bluebird Copper and Silver | Lead | Surface-Underground | Prospect | MRDS |
| Bobby Boy Lode | Occurrence | MRDS | ||
| Bobby Boy Mine | Lead | Underground | Past Producer | MRDS |
| Boeing Fluorite | Surface-Underground | Past Producer | MRDS | |
| Boeing Prospect | Fluorine-Fluorite | Past Producer | MRDS | |
| Bompart Homestead | Mica | Occurrence | MRDS | |
| Bonanza Claim | Lead | Past Producer | MRDS | |
| Bonanza Mine | Lead, Silver | Past Producer | MRDS | |
| Bondholder Prospect | Lead | Surface-Underground | Prospect | MRDS |
| Buckeye | Feldspar | Occurrence | MRDS | |
| Buckeye | Gold | Unknown | MRDS | |
| Buffalo Gulch | Gold | Placer | Past Producer | MRDS |
| Bunblebee | Copper | Underground | Unknown | MRDS |
| Bunker Hill | Underground | Past Producer | MRDS | |
| Bunker Hill Mine | Silver, Lead | Past Producer | MRDS | |
| Burrell and Evans | Iron | Occurrence | MRDS | |
| Butterfly Mine | Copper | Surface-Underground | Prospect | MRDS |
| Butterfly Quartz Lode | Gold, Silver, Copper, Lead, Zinc | Occurrence | MRDS | |
| Byrnes Creek Copper | Copper | Occurrence | MRDS | |
| Calliope Mine | Gold | Underground | Past Producer | MRDS |
| Calumet Mine | Gold | Past Producer | MRDS | |
| Calumet Mine | Gold | Underground | Past Producer | MRDS |
| Canyon Creek | Gold | Placer | Past Producer | MRDS |
| Canyon Creek | Gold | Placer | Past Producer | MRDS |
| Canyon Creek Placer | Gold | Past Producer | MRDS | |
| Cappolis | Lead | Underground | Unknown | MRDS |
| Carbonate | Underground | Past Producer | MRDS | |
| Carbonate Hill | Underground | Prospect | MRDS | |
| Cave Gulch | Gold | Placer | Past Producer | MRDS |
| Channel Gold Mines, Ltd. | Gold | Underground | Unknown | MRDS |
| Charles D. Greenfield Property | Lead | Occurrence | MRDS | |
| Charley Copper & Silver Claims | Copper | Underground | Unknown | MRDS |
| Chief of the Mnts. Patented Clm | Silica | Prospect | MRDS | |
| China | Gold | Underground | Past Producer | MRDS |
| Cinnamon Lode | Lead | Occurrence | MRDS | |
| Clark Gulch | Gold | Placer | Past Producer | MRDS |
| Clay Deposit In Orofino Gulch | Clay | Occurrence | MRDS | |
| Clay Deposit Near Silver Creek | Clay | Occurrence | MRDS | |
| Clay Deposit Northwest of Scratchgravel Hills | Brick Clay | Occurrence | MRDS | |
| Clay Occurence At Woodrow Wilson Mine | Kaolin, Brick Clay | Occurrence | MRDS | |
| Climax Lode Mine | Gold | Occurrence | MRDS | |
| Colorado Gulch Deposit | Magnesite | Occurrence | MRDS | |
| Colorado Gulch Deposits | Tungsten, Garnet | Occurrence | MRDS | |
| Colorado Gulch Deposits | Tungsten | Occurrence | MRDS | |
| Colorado Gulch Dolomite Deposit | Dolomite | Occurrence | MRDS | |
| Columbia Mine | Gold, Silver | Past Producer | MRDS | |
| Columbia Mine | Gold | Underground | Past Producer | MRDS |
| Come Again and Crown Group | Gold | Surface | Unknown | MRDS |
| Come Again and Crown Groups | Gold, Silver | Past Producer | MRDS | |
| Consolation | Underground | Past Producer | MRDS | |
| Cooper | Gold | Occurrence | MRDS | |
| Copper Bowl Mine | Copper | Surface-Underground | Past Producer | MRDS |
| Copper Camp | Copper | Surface-Underground | Unknown | MRDS |
| Copper Cliff Mine | Copper | Underground | Unknown | MRDS |
| Copper Creek Molybdenum/mercury Occurrence | Occurrence | MRDS | ||
| Copper Dyke Mine | Lead | Underground | Prospect | MRDS |
| Copper Hill | Underground | Past Producer | MRDS | |
| Copper Hill | Copper | Surface | Unknown | MRDS |
| Copper Hill Mine | Silver | Past Producer | MRDS | |
| Copper Queen | Copper | Underground | Unknown | MRDS |
| Copper-Bearing Sandstone - Unnamed | Silver, Copper | Occurrence | MRDS | |
| Copper-Bearing Siltite-Name Unknown | Copper, Silver | Prospect | MRDS | |
| Cotter Basin Mine | Copper | Surface-Underground | Past Producer | MRDS |
| Cotter Mine | Gold | Past Producer | MRDS | |
| Cottonwood Creek and Gravel Range | Gold | Placer | Past Producer | MRDS |
| Cottonwood Creek and Gravel Range Placer | Gold | Past Producer | MRDS | |
| Crown Mine | Gold | Past Producer | MRDS | |
| Crown Mine | Gold | Surface-Underground | Past Producer | MRDS |
| Crumb Mine | Gold | Placer | Unknown | MRDS |
| Cruse Mine | Gold, Silver | Past Producer | MRDS | |
| Crystal Mine | Gold | Occurrence | MRDS | |
| Crystal Mining | Copper | Surface-Underground | Unknown | MRDS |
| Cyclone Mine | Gold | Underground | Unknown | MRDS |
| Daisy Lode Mine | Gold | Occurrence | MRDS | |
| Dan Oker's Mine | Gold | Underground | Unknown | MRDS |
| Dana's Bar | Gold | Placer | Past Producer | MRDS |
| Danas Bar | Gemstone | Placer | Past Producer | MRDS |
| Daniel Stanton Mine | Lead, Silver | Past Producer | MRDS | |
| Daniel Stanton Mine | Underground | Past Producer | MRDS | |
| Dearborn River Titanium/iron Occurrence | Occurrence | MRDS | ||
| Dert Gulch Mine | Gold | Surface | Past Producer | MRDS |
| Dexter Lode | Lead | Surface-Underground | Unknown | MRDS |
| Discovery and Margurete Mine | Gold | Underground | Past Producer | MRDS |
| Doctor Steele Mine | Gold | Occurrence | MRDS | |
| Dog Creek Mine | Phosphorus-Phosphates | Underground | Past Producer | MRDS |
| Dog Creek Phosphate Mine | Phosphorus-Phosphates | Past Producer | MRDS | |
| Dog Creek Titanium/iron Occurrence | Occurrence | MRDS | ||
| Dog Creek and Tributaries Placer | Gold | Past Producer | MRDS | |
| Dovie Placer | Gold | Occurrence | MRDS | |
| Drumheller Mine | Gold, Silver, Lead | Past Producer | MRDS | |
| Drumheller Mine | Lead | Underground | Past Producer | MRDS |
| Drumlummon Mine | Silver, Gold | Surface-Underground | Past Producer | MRDS |
| Drumlummon Mine | Gold, Silver | Underground | Past Producer | MRDS |
| Drumlummon Mine | Gold Ore | Underground | Abandoned | MSHA |
| Dry Gulch | Talc-Soapstone | Unknown | MRDS | |
| Dry Gulch Limestone | Limestone, General | Unknown | MRDS | |
| Dutro Mine | Gold | Past Producer | MRDS | |
| E Z Rocks 4 U | Dimension Stone NEC | Surface | Abandoned | MSHA |
| Earthquake Mine | Silver, Lead | Past Producer | MRDS | |
| East Helena Plant Asarco | Silver | Processing Plant | Past Producer | MRDS |
| Eclipse | Copper | Surface | Unknown | MRDS |
| Economy Mines Company | Gold | Underground | Unknown | MRDS |
| Eldorado Bar | Gold, Silver | Past Producer | MRDS | |
| Eldorado Gems and Precious Metals Llc | Sapphire | Surface | Abandoned | MSHA |
| Elevated Placer Bars-Name Unknown | Gold | Placer | Prospect | MRDS |
| Elizabeth Mine | Misc. Metal Ore NEC | Surface | Abandoned | MSHA |
| Elizabeth Mine | Silver, Gold | Past Producer | MRDS | |
| Elizabeth Mine | Gold | Underground | Past Producer | MRDS |
| Elk Creek Lead-Zinc Claim | Occurrence | MRDS | ||
| Ella Mine | Gold | Past Producer | MRDS | |
| Ella Mine | Gold | Underground | Past Producer | MRDS |
| Emma Miller | Gold | Past Producer | MRDS | |
| Empire Mine | Lead, Silver, Gold | Past Producer | MRDS | |
| Empire Mine | Gold | Underground | Unknown | MRDS |
| Eula Mine | Gold | Underground | Unknown | MRDS |
| Eureka | Underground | Past Producer | MRDS | |
| Eureka | Gold | Underground | Past Producer | MRDS |
| Eureka Claim | Gold | Surface-Underground | Prospect | MRDS |
| Eureka Mine | Silver, Lead | Past Producer | MRDS | |
| Evans-Jones Placer | Tungsten | Placer | Unknown | MRDS |
| Evening Placer | Occurrence | MRDS | ||
| Evergreen | Underground | Past Producer | MRDS | |
| Evergreen Mine | Silver, Lead | Past Producer | MRDS | |
| Fairview Claim | Lead | Occurrence | MRDS | |
| Fairview Mine | Lead | Underground | Past Producer | MRDS |
| Federal Gold Group | Gold | Underground | Past Producer | MRDS |
| Fletcher Barite Deposit | Barium-Barite | Occurrence | MRDS | |
| Franklin Mine | Silver, Gold | Past Producer | MRDS | |
| Franklin and Sam Gaty | Underground | Past Producer | MRDS | |
| Free Speech Number One | Underground | Past Producer | MRDS | |
| Frisbee Stemple Group | Copper | Surface | Past Producer | MRDS |
| General Harrison Mine | Gold | Occurrence | MRDS | |
| General Harrison Mine | Gold | Surface | Past Producer | MRDS |
| General Mine | Gold | Past Producer | MRDS | |
| Giant Claim | Gold | Underground | Past Producer | MRDS |
| Goat Ridge Prospect | Limestone, Dimension | Underground | Unknown | MRDS |
| Golconda | Gold | Occurrence | MRDS | |
| Gold Crown Mine | Gold | Underground | Past Producer | MRDS |
| Gold Dollar Mine | Gold | Occurrence | MRDS | |
| Gold Dollar Mine | Gold | Occurrence | MRDS | |
| Golden Charm Mine | Gold | Underground | Unknown | MRDS |
| Golden Crown | Gold | Underground | Past Producer | MRDS |
| Golden Crown Mine | Gold, Silver | Past Producer | MRDS | |
| Golden Dollar #5 Lode | Lead, Copper, Gold | Prospect | MRDS | |
| Golden Feather Placer | Gold | Occurrence | MRDS | |
| Golden Flag | Gold | Surface | Past Producer | MRDS |
| Golden Messenger Mine | Gold | Underground | Unknown | MRDS |
| Golden Slipper Lode | Silver | Prospect | MRDS | |
| Good Chance | Gold, Copper | Underground | Occurrence | MRDS |
| Gossan & Junior Claims | Lead | Surface | Prospect | MRDS |
| Gould Creek | Gold | Placer | Past Producer | MRDS |
| Gould Placer Mine | Gold | Placer | Past Producer | MRDS |
| Gould-Stemple District | Gold, Silver | Past Producer | MRDS | |
| Gravel Range | Gold | Placer | Past Producer | MRDS |
| Gray Rock Mine | Gold | Surface-Underground | Past Producer | MRDS |
| Green Flats Placer | Occurrence | MRDS | ||
| Greenhorn Cr | Gold | Past Producer | MRDS | |
| Greenhorn Creek | Gold | Placer | Past Producer | MRDS |
| Grizzly Gulch | Limestone, General | Unknown | MRDS | |
| Grubstake | Gold | Underground | Past Producer | MRDS |
| Grunter & Blue Bell | Copper | Occurrence | MRDS | |
| Grvel Bar | Gold | Placer | Past Producer | MRDS |
| Guerin Lode | Occurrence | MRDS | ||
| Guy Mine | Lead, Silver | Occurrence | MRDS | |
| Guy Silver Mine | Zinc, Silver, Lead | Underground | Past Producer | MRDS |
| Hsg Portable Screen Plant #2 | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Haley Mine | Gold | Underground | Past Producer | MRDS |
| Hamlet Mine | Lead, Silver | Occurrence | MRDS | |
| Hamlet Mine | Silver | Prospect | MRDS | |
| Harrison Quarry | Stone, Dimension | Past Producer | MRDS | |
| Hauser Lake Area | Uranium | Occurrence | MRDS | |
| Hauser Lake Area | Uranium | Occurrence | MRDS | |
| Hector Lode | Barium-Barite | Surface | Unknown | MRDS |
| Heddleston Deposit | Copper | Surface | Past Producer | MRDS |
| Heitmann Placer Claim | Gold | Placer | Unknown | MRDS |
| Helena District | Gold, Silver | Past Producer | MRDS | |
| Helena Mine | Silver, Lead | Past Producer | MRDS | |
| Helena Mine | Gold | Underground | Past Producer | MRDS |
| Helena Placers | Gold | Past Producer | MRDS | |
| Helena Pumicite Deposit | Pumice | Occurrence | MRDS | |
| Helena Sand & Gravel-Portable Wash Plant | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Helena Slag Dump | Iron | Occurrence | MRDS | |
| Hematite Iron Mine | Gold | Underground | Past Producer | MRDS |
| Herb W | Zinc | Underground | Past Producer | MRDS |
| Herwood | Copper | Underground | Past Producer | MRDS |
| Hidden Vein Copper Deposit | Copper | Surface | Unknown | MRDS |
| Hog Claim | Silver | Occurrence | MRDS | |
| Hogall | Lead | Occurrence | MRDS | |
| Homestake Mine | Gold | Past Producer | MRDS | |
| Homestake Mine | Gold | Underground | Past Producer | MRDS |
| Honeycomb | Copper | Past Producer | MRDS | |
| Hope Mine | Lead | Underground | Unknown | MRDS |
| Hopeful Mine | Lead, Gold | Past Producer | MRDS | |
| Hopeful Mine | Gold | Underground | Past Producer | MRDS |
| Horsefly Adit | Quartz | Underground | Unknown | MRDS |
| Horsefly Mine | Occurrence | MRDS | ||
| Hubbard Mine | Gold | Past Producer | MRDS | |
| Hubbard Mine | Gold | Underground | Past Producer | MRDS |
| Hudson Mine | Copper | Past Producer | MRDS | |
| Hudson Mine | Copper | Surface-Underground | Past Producer | MRDS |
| Humdinger Group | Gold | Surface-Underground | Occurrence | MRDS |
| Illini Mine | Gold | Underground | Past Producer | MRDS |
| Independent Mine | Gold | Surface-Underground | Past Producer | MRDS |
| Independent Prospect | Gold | Past Producer | MRDS | |
| Interocean Tunnel | Lead | Occurrence | MRDS | |
| Iridescent | Copper | Surface | Unknown | MRDS |
| Iridescent Claim | Copper | Occurrence | MRDS | |
| Iron | Iron | Underground | Past Producer | MRDS |
| Iron Hill Claim | Lead | Underground | Past Producer | MRDS |
| Itha D | Gold | Placer | Past Producer | MRDS |
| J J Hill Claims | Gold | Occurrence | MRDS | |
| Jay Gould Mine | Silver, Gold | Underground | Past Producer | MRDS |
| Jefferson Creek Placer | Gold | Past Producer | MRDS | |
| Jefferson Gulch | Gold | Placer | Past Producer | MRDS |
| Jerusha Mine | Gold | Occurrence | MRDS | |
| Jessie Prospect | Lead | Surface | Unknown | MRDS |
| Jewel Mountain Mining Co. | Gemstone | Surface | Unknown | MRDS |
| John Neufeld | Copper | Occurrence | MRDS | |
| Johnny Mine | Lead | Underground | Prospect | MRDS |
| Johny Mine | Lead, Silver | Past Producer | MRDS | |
| Jolly Roger Mine | Silver | Underground | Prospect | MRDS |
| Julia Mine | Gold, Silver, Lead | Past Producer | MRDS | |
| Julia Mine | Gold | Underground | Past Producer | MRDS |
| Justice Clementh | Underground | Past Producer | MRDS | |
| Justice Mine | Gold, Silver | Past Producer | MRDS | |
| Kodiak 300 | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Kain Mine | Gold, Silver | Occurrence | MRDS | |
| Kain Mine | Gold | Occurrence | MRDS | |
| Katy Mine | Gold, Silver, Lead | Past Producer | MRDS | |
| Katy Mine | Lead | Underground | Past Producer | MRDS |
| Keep Cool Creek | Gold | Placer | Occurrence | MRDS |
| Kenneth Placer | Gold | Occurrence | MRDS | |
| King David Lode | Gold | Occurrence | MRDS | |
| King Tut Mine | Lead, Silver | Past Producer | MRDS | |
| King Tut Mine | Silver | Underground | Past Producer | MRDS |
| Kingsbury Gulch | Gold | Placer | Past Producer | MRDS |
| Kleeman Crusher/screen | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Kleinschmidt | Underground | Occurrence | MRDS | |
| Klondike Ore #2 | Gold | Placer | Past Producer | MRDS |
| Korizek Mine | Copper | Underground | Unknown | MRDS |
| Krasny Gulch Placer | Gold | Placer | Unknown | MRDS |
| Lady Luck | Gold | Underground | Past Producer | MRDS |
| Lady Luck Placer | Occurrence | MRDS | ||
| Landers Fork Mercury Occurrence | Occurrence | MRDS | ||
| Lannigan Mountain Area | Occurrence | MRDS | ||
| Larsen | Gold | Occurrence | MRDS | |
| Lasalle Construction & Supply | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Last Chance Gulch Placer | Gold | Past Producer | MRDS | |
| Last Chance Gulch Placer | Copper | Placer | Unknown | MRDS |
| Last Chance Lode | Gold, Silver | Occurrence | MRDS | |
| Last Chance Mine | Silver, Gold | Past Producer | MRDS | |
| Last Chance Mine | Gold | Underground | Past Producer | MRDS |
| Lee Mountain | Silver, Gold | Past Producer | MRDS | |
| Lee Mountain | Underground | Past Producer | MRDS | |
| Lefevre Ranch | Calcium | Surface | Occurrence | MRDS |
| Lexington | Underground | Past Producer | MRDS | |
| Lexington Mine | Silver, Lead | Past Producer | MRDS | |
| Lexington Mine | Silver, Lead | Past Producer | MRDS | |
| Lexington Mine | Silver | Underground | Past Producer | MRDS |
| Limestone Occurrence | Limestone, Dimension | Occurrence | MRDS | |
| Limestone Occurrence | Limestone, Dimension | Occurrence | MRDS | |
| Lincoln Creek | Gold | Placer | Past Producer | MRDS |
| Lincoln Gulch District | Gold | Past Producer | MRDS | |
| Lincoln Gulch Placer | Gold | Past Producer | MRDS | |
| Lincoln Gulch Placer Mine | Gold | Placer | Past Producer | MRDS |
| Lincoln View Mine | Gold | Underground | Unknown | MRDS |
| Lion Mine | Gold | Occurrence | MRDS | |
| Little Creek Copper Prospect | Past Producer | MRDS | ||
| Little Dandy | Gold | Underground | Past Producer | MRDS |
| Little David | Copper | Surface-Underground | Unknown | MRDS |
| Little Jim Lode | Occurrence | MRDS | ||
| Little Lilly | Underground | Past Producer | MRDS | |
| Little Lilly Group | Silver | Past Producer | MRDS | |
| Little Ox | Underground | Prospect | MRDS | |
| Little Ox Mine | Gold, Silver | Past Producer | MRDS | |
| Little Prickly Pear Creek | Barium-Barite | Unknown | MRDS | |
| Little Rock Placer | Gold | Prospect | MRDS | |
| Little Sampson | Underground | Occurrence | MRDS | |
| Little Sampson Mine | Lead, Silver | Past Producer | MRDS | |
| Liverpool Creek | Gold | Placer | Occurrence | MRDS |
| Locality 18 | Quartz | Underground | Unknown | MRDS |
| Looby Mine | Silver, Lead | Past Producer | MRDS | |
| Loory Mine | Gold | Occurrence | MRDS | |
| Lost Horse Creek | Gold | Placer | Occurrence | MRDS |
| Lucky Bernice No. 3 | Lead | Occurrence | MRDS | |
| Lucky Joe Mine | Silver, Gold | Past Producer | MRDS | |
| Lucky Joe Mine | Gold | Occurrence | MRDS | |
| Lucky Linda Mine | Silver | Underground | Prospect | MRDS |
| Lucky Marie Placer | Zinc | Prospect | MRDS | |
| Lucky Strike | Gold | Underground | Unknown | MRDS |
| M L J Grizzly | Gold Ore | Surface | Abandoned | MSHA |
| M and L Mine | Gold, Silver | Past Producer | MRDS | |
| M and L Mine | Gold | Occurrence | MRDS | |
| Magma | Lead | Surface-Underground | Unknown | MRDS |
| Magpie Group | Silver, Lead | Past Producer | MRDS | |
| Magpie Group | Gold | Occurrence | MRDS | |
| Magpie Gulch | Gold | Placer | Past Producer | MRDS |
| Mamie D. Lode | Prospect | MRDS | ||
| Mammoth | Underground | Past Producer | MRDS | |
| Mammoth Claim | Gold, Copper | Past Producer | MRDS | |
| Mammoth Claim | Copper | Surface-Underground | Prospect | MRDS |
| Mammoth Mine | Lead | Occurrence | MRDS | |
| Mammoth Mine | Copper | Past Producer | MRDS | |
| Mammoth Mine | Copper | Occurrence | MRDS | |
| Margaret Placer | Gold | Occurrence | MRDS | |
| Margarette | Gold | Occurrence | MRDS | |
| Marguerite Placer | Gold | Occurrence | MRDS | |
| Marysville District | Gold, Silver, Lead | Past Producer | MRDS | |
| Marysville-Silver Creek | Gold | Placer | Past Producer | MRDS |
| Mass Mine | Silver | Underground | Unknown | MRDS |
| Maybesto & Try Claims | Gold | Underground | Unknown | MRDS |
| McAwber | Underground | Prospect | MRDS | |
| McCawber Mine | Lead, Silver | Past Producer | MRDS | |
| McClellan Creek Placer | Gold | Past Producer | MRDS | |
| McCone Bar | Gold | Occurrence | MRDS | |
| Midnight | Underground | Past Producer | MRDS | |
| Mike Horse Mine | Zinc, Lead, Silver | Underground | Past Producer | MRDS |
| Miljour-Violet Jane Mine | Gold | Surface | Unknown | MRDS |
| Milliron | Underground | Prospect | MRDS | |
| Mings Bar | Gold | Placer | Occurrence | MRDS |
| Moble | Gold Ore | Surface | Abandoned | MSHA |
| Monitor Creek Placer | Gold | Placer | Unknown | MRDS |
| Monte Christo Mine | Lead | Underground | Past Producer | MRDS |
| Montreal Claim | Copper | Occurrence | MRDS | |
| Moonlight Mine | Silver | Past Producer | MRDS | |
| Moonlight Mine | Silver | Underground | Past Producer | MRDS |
| Morning Star Mine | Gold | Prospect | MRDS | |
| Mt. Pleasant | Lead | Underground | Past Producer | MRDS |
| Mullin Claim | Gold | Past Producer | MRDS | |
| Mullin Claim | Gold | Underground | Prospect | MRDS |
| Nakoma Mine | Gold | Past Producer | MRDS | |
| Nakoma Mine | Gold | Underground | Past Producer | MRDS |
| Nellie Miles Lode | Tungsten | Surface | Unknown | MRDS |
| Nelson Gulch | Gold | Placer | Unknown | MRDS |
| Nelson Gulch Marble Deposit | Marble, Dimension | Past Producer | MRDS | |
| Nelson Gulch Placers | Gold | Past Producer | MRDS | |
| Nettie Mine | Gold | Past Producer | MRDS | |
| New Era | Copper | Underground | Unknown | MRDS |
| Nick and Dick Mine | Lead | Underground | Past Producer | MRDS |
| Nile Mine | Lead, Silver | Past Producer | MRDS | |
| Nile Mine | Lead | Surface-Underground | Prospect | MRDS |
| Nora Darling | Copper | Underground | Past Producer | MRDS |
| North Pacific Mine | Lead, Silver | Past Producer | MRDS | |
| North Star Claim | Silver, Copper, Gold | Occurrence | MRDS | |
| North Star Claim | Gold | Surface | Past Producer | MRDS |
| O.h.bassett | Underground | Past Producer | MRDS | |
| O.h.bassett Mine | Silver, Lead | Occurrence | MRDS | |
| Occidental Claim | Lead | Surface | Unknown | MRDS |
| Oker Mine | Gold | Occurrence | MRDS | |
| Old Amber Mine | Gold | Occurrence | MRDS | |
| Old Dominion Mine | Gold | Underground | Prospect | MRDS |
| Old Miller | Gold | Occurrence | MRDS | |
| Old Silver Mine | Copper | Surface-Underground | Prospect | MRDS |
| Omega Mine | Gold | Underground | Unknown | MRDS |
| Ophir Creek | Gold | Placer | Past Producer | MRDS |
| Oregon Gulch | Gold | Placer | Past Producer | MRDS |
| Oriene | Copper | Surface | Prospect | MRDS |
| Original Mine | Gold | Placer | Past Producer | MRDS |
| Oro Fino Mine | Silver | Underground | Past Producer | MRDS |
| Osage Chief | Iron | Surface-Underground | Past Producer | MRDS |
| Osage Chief Mine | Copper, Iron, Gold | Past Producer | MRDS | |
| Osgood Placer Group | Gold | Placer | Unknown | MRDS |
| Ottawa Mine | Tungsten | Occurrence | MRDS | |
| Pack Horse Lode | Prospect | MRDS | ||
| Panqewasset | Gold | Underground | Past Producer | MRDS |
| Paymaster | Underground | Past Producer | MRDS | |
| Pearl Mine | Silver, Gold | Occurrence | MRDS | |
| Pearl Mine | Gold | Underground | Past Producer | MRDS |
| Peerless Jennie | Underground | Past Producer | MRDS | |
| Peerless Jennie Mine | Silver, Lead | Past Producer | MRDS | |
| Peggy Ann Mine | Gold | Underground | Past Producer | MRDS |
| Penobscot Mine | Gold, Silver | Past Producer | MRDS | |
| Perry & Schroder | Gold | Placer | Unknown | MRDS |
| Perry Claims | Lead, Silver | Occurrence | MRDS | |
| Perry Prospect | Tungsten | Surface | Unknown | MRDS |
| Pg Mine | Gold | Placer | Past Producer | MRDS |
| Piegan Gulch | Gold | Placer | Past Producer | MRDS |
| Piegan Gulch Placer | Gold | Past Producer | MRDS | |
| Piegan Gulch Prospect | Tungsten | Occurrence | MRDS | |
| Piegan-Gloster Mine | Silver, Gold | Past Producer | MRDS | |
| Pine Ridge | Fluorine-Fluorite | Underground | Unknown | MRDS |
| Poorman Creek | Gold | Placer | Prospect | MRDS |
| Poorman Creek Placer | Gold | Past Producer | MRDS | |
| Porphyry Dike | Gold | Surface | Unknown | MRDS |
| Porphyry Dike Mine | Gold | Past Producer | MRDS | |
| Port #1 | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Portable 2 | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Portable Crusher #1 | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Portable Operations | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Portable Operations 2 | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Portable Screening Plant | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Porter Bros. Corporation | Gold | Placer | Unknown | MRDS |
| Potratz Prospect | Gold, Silver, Copper | Past Producer | MRDS |