Mine

County

Notes

G & S Mines

Boulder

Miscellaneous "G"

G. M. G.

San Miguel

G-1, 1-A, G-2, G-3, G-4

Mesa

Gagen Tunnel

Summit

Galana Mountain Gold & Silver Mining Company

San Juan

Miscellaneous "F"

Galena

Gilpin

Miscellaneous "G"

Galena & Lost Day Mines

Ouray

Miscellaneous "G"

Galena Group

San Juan

Miscellaneous "F"

Galena Mine

Teller

Miscellaneous "G"

Galena Mountain Group

Gunnison

Miscellaneous "G"

Galena Queen

San Juan

Gallic Vulcan Mine

Hinsdale

Game Ridge

Custer

Miscellaneous "G"

Garbutt Mine

Lake

Garden City Shaft

Lake

Miscellaneous "G"

Garden Park

Fremont

Miscellaneous G

Gardner

Boulder

Miscellaneous "G"

Gardner Emancipation Consolidated Mines Company

Boulder

Miscellaneous "G"

Gardner Mine

Gilpin

Miscellaneous "G"

Gardner Mine #556

Boulder

Miscellaneous "G"

Garfield Mine

Boulder

Miscellaneous "G"

Garfield Mine

Chaffee

Garfield Vanadium

Garfield

Garibaldi Tunnel

Lake

Garn G. Christensen

Chaffee

Miscellaneous "G"

Garo Copper Syndicate

Park

Miscellaneous "G"

Garratt Shale Adit

Garfield

Garrett Shale Adit

Garfield

Miscellaneous G

Garry Owen Mine

San Juan

Garvie Mine

Park

Gary Oil Shale Holdings

Garfield

Miscellaneous G

Gaston Claim

Gilpin

Miscellaneous "G"

Gateways Alloys

Mesa

Gatlin Mine

Boulder

Miscellaneous "G"

Gaunlet Gold Mining

Gilpin

Gaw Shaft

Lake

Miscellaneous "G"

Gearhart

Mesa

GEC - Corley Strip

Fremont

Gem Mine

Clear Creek

Gem Mine

Pitkin

Gem Mines

Teller

Miscellaneous "G"

General Howard

Dolores

Miscellaneous "G"

General Mine

Montrose

Miscellaneous "G"

General Mines & Oil Company

Jefferson

Miscellaneous G

General Sherman

Hinsdale

General Teller

Summit

General Vermiculite Mine

Custer

Miscellaneous "G"

Genesee - Vanderbilt

Ouray

Geneva

Teller

Miscellaneous "G"

Geneva and Matoa

Teller

Gent No. 1

Moffat

Miscellaneous "G"

Geo. No. 1

Montrose

George Henry Mine

Boulder

Miscellaneous "G"

George the Third Mine

Hinsdale

George Washington Group

Hinsdale

Miscellaneous "G"

Georgetown

Clear Creek

Miscellaneous "G"

Georgetown Dam

Clear Creek

Miscellaneous "G"

Gerald T

San Miguel

German Mine

Clear Creek

German Mine

Gilpin

Germania Mine

Summit

Miscellaneous "G"

Germany Group

Clear Creek

Gertrude Claim

Lake

Miscellaneous "G"

Gerty, Hayes & Wheeler

Gilpin

Miscellaneous "G"

Gettysberg Mine

Gilpin

Gettysburg Mine

Boulder

Miscellaneous "G"

Geyser Group

Dolores

Geyser Mine

Clear Creek

Miscellaneous "G"

GFYCO

Gilpin

Giant Crystal

Larimer

Miscellaneous "S"

Giant Eclipse Construction Mining

Chaffee

Giant Lode

Hinsdale

Miscellaneous "G"

Giant Lode

Lake

Gilard Mine

Boulder

Gilbert

Montrose

Gillespie Group

Clear Creek

Miscellaneous "G"

Gillett Mill Tailings Dump

Teller

Miscellaneous "G"

Gillispie & Brighton Mines

Boulder

Gilpin - Orion Mine

Gilpin

Gilpin Boulder Consolidated Mines Company

Gilpin

Miscellaneous "G"

Gilpin County

Gilpin

Miscellaneous "G"

Gilpin County Mine

Boulder

Miscellaneous "G"

Gilpin Gold Mountain Mining & Milling Company

Gilpin

Miscellaneous "G"

Gilpin Tramway

Gilpin

Miscellaneous "G"

Gilpin Tungsten Production

Gilpin

Gilt Edge Mine

Clear Creek

Gilt Edge Mine

Lake

Gina #1 & #2

Boulder

Miscellaneous "G"

Ginbson Mine

Gilpin

Miscellaneous "G"

Girard Holdings

Mesa

Miscell. Oil Shale

Gismo

Saguache

Miscellaneous "G"

Glacier Mine

Conejos

Gladiator Mine

Boulder

Gladstone

Boulder

Gladstone Mines

Chaffee

Gladys Mine

Boulder

Miscellaneous "G"

Glasco Mine

Clear Creek

Glasgow Mine

Clear Creek

Miscellaneous "G"

Glen #27

San Miguel

Glen Clover Mine

Boulder

Miscellaneous "G"

Glen Cove Sewage System

El Paso

Miscellaneous "G"

Glen Cove Water System Tunnel

El Paso

Miscellaneous "G"

Glendale Mine

Gilpin

Miscellaneous "G"

Glennalla Gold Mining Company

Gilpin

Miscellaneous "G"

Glennalla Mine

Clear Creek

Glenullin Gold Mines Company

Summit

Miscellaneous "G"

Glenwood Exploration Company

Eagle

Miscellaneous "G"

Glenwood Springs Tunnel

Garfield

Globe - Newmont

Teller

Miscellaneous "G"

Globe Hill Shovel Operations

Teller

Miscellaneous "G"

Gloria Mining Company

Lake

Miscellaneous "G"

Glorietta Shaft

Teller

Glory Hole Mine

Gilpin

Gloryhole

Clear Creek

Glover Tunnel

Lake

Miscellaneous "G"

Gnome

Hinsdale

Go-Boy

Mesa

Golconda Group

Rio Grande

Miscellaneous "G"

Golconda Mine

Hinsdale

Golconda Tunnel

Clear Creek

Miscellaneous "G"

Gold & Silver Mining & Milling Company

Ouray

Miscellaneous "G"

Gold Anchor

Clear Creek

Gold Anchor Mine

Dolores

Gold Basin Group

Gilpin

Gold Bell Mining Milling & Tunneling Company

Summit

Miscellaneous "G"

Gold Belt Drainage, Transportation & Tunnel Company

Gunnison

Miscellaneous "G"

Gold Belt Tunnel

Clear Creek

Gold Block Mine

San Miguel

Gold Bond Development Company

Boulder

Miscellaneous "G"

Gold Bond Mine

Teller

Gold Bug

Chaffee

Gold Bug Mine

Clear Creek

Gold Bug Mine

Eagle

Miscellaneous "G"

Gold Bug Mine

Larimer

Gold Camp

Chaffee

Gold Chest

Clear Creek

Miscellaneous "G"

Gold Chief Group

Boulder

Miscellaneous "G"

Gold Cloud Mine

Gilpin

Gold Coin & White

San Juan

Miscellaneous "C"

Gold Coin Mine

Larimer

Gold Coin Mine

Teller

Gold Crest Mine

Summit

Gold Crown

San Juan

Miscellaneous "F"

Gold Crown Mountain Corporation

La Plata

Gold Cup Mine

Gilpin

Gold Cup Mine

Gunnison

Gold Cup Mine

Jackson

Gold Dirt Mine

Clear Creek

Gold Dirt Mine

Gilpin

Gold Dollar

Montezuma

Gold Dollar Mine

Clear Creek

Gold Dollar Mine

Teller

Gold Dust Mine & Mill

Boulder

Gold Eagle

Chaffee

Gold Eagle

Chaffee

Miscellaneous "G"

Gold Farm Mine

Boulder

Miscellaneous "G"

Gold Finch

Boulder

Miscellaneous "G"

Gold Fissure Mine

Clear Creek

Gold Fissure Mine

Summit

Miscellaneous "G"

Gold Fountain Mine

San Juan

Miscellaneous "F"

Gold Glen Mine

Clear Creek

Gold Hill Concentrating Company

Boulder

Gold Hill Mining Company

Boulder

Gold Hub Mines

San Juan

Gold Key

Clear Creek

Miscellaneous "G"

Gold Key Mine

Gilpin

Miscellaneous "G"

Gold King

Ouray

Miscellaneous "G"

Gold King

San Miguel

Gold King

Teller

Gold King & Gold Queen Claims

Custer

Miscellaneous "G"

Gold King Mine

Clear Creek

Gold King Mine

La Plata

Gold King Mine

Teller

Gold King Mines

San Juan

Gold King Mining & Exploration Company

Gilpin

Miscellaneous "G"

Gold Leaf

Boulder

Miscellaneous "G"

Gold Links Mine

Gunnison

Gold Lion

Ouray

Miscellaneous "G"

Gold Lode

Custer

Miscellaneous "G"

Gold Lode Mine

Boulder

Miscellaneous "G"

Gold Metal Mine

Clear Creek

Gold Meter Mining Company

Hinsdale

Miscellaneous "G"

Gold Monument Mine

Gunnison

Gold Mountain Mining & Improvement Company

Boulder

Gold Nugget

Custer

Miscellaneous "G"

Gold Nugget Mines Company

Boulder

Miscellaneous "G"

Gold Park Shaft

Eagle

Miscellaneous "G"

Gold Pick Mining & Milling Company

Gunnison

Miscellaneous "G"

Gold Pot

Clear Creek

Miscellaneous "G"

Gold Prince Mine

San Juan

Gold Producers Incorporated

Teller

Gold Quartz

Hinsdale

Gold Ridge Lode

Park

Miscellaneous "G"

Gold Rock Mine

Gilpin

Gold Run Tunnels

Montezuma

Miscellaneous "G"

Gold Seal Mining & Milling Company

Gilpin

Miscellaneous "G"

Gold Slide Mining

Park

Gold Sovereign Mine

Teller

Gold Star

Park

Miscellaneous "G"

Gold Star Mining Company

Gilpin

Miscellaneous "G"

Gold Stud

Clear Creek

Miscellaneous "G"

Gold Top

Park

Miscellaneous "G"

Gold Valley Mine

Clear Creek

Gold Vein Mining

Gunnison

Gold Wak Mine

Clear Creek

Miscellaneous "G"

Gold Wave Group

Park

Golden Age Mine

Boulder

Golden Beaver Mine

Summit

Golden Bell Mine

Boulder

Miscellaneous "G"

Golden Cache

Chaffee

Miscellaneous "G"

Golden Calf Mine

Clear Creek

Golden Calf Mining

Chaffee

Golden Chest Project

Boulder

Miscellaneous "G"

Golden Chief

Gilpin

Miscellaneous "G"

Golden Comet

Eagle

Golden Cresent Mine

Gilpin

Golden Cross Mine

Boulder

Miscellaneous "G"

Golden Crown Mine

Boulder

Miscellaneous "G"

Golden Crown Mine

Clear Creek

Golden Cycle

El Paso

Miscellaneous "G"

Golden Cycle

Gilpin

Golden Cycle Corporation

Teller

Golden Dollar Mine

Gilpin

Golden Eagle

Montrose

Golden Eagle

San Miguel

Miscellaneous "G"

Golden Eagle Mine

Boulder

Miscellaneous "G"

Golden Eagle Mine

Clear Creek

Golden Eagle Mine

Teller

Miscellaneous "G"

Golden Eagle Mining Association

Teller

Miscellaneous "G"

Golden Edge

Routt

Miscellaneous "G"

Golden Edge Mine

Clear Creek

Golden Empire Mining

Clear Creek

Golden Era Mine

Park

Golden Fleece

Hinsdale

Golden Gate

Clear Creek

Miscellaneous "G"

Golden Girl

La Plata

Miscellaneous "G"

Golden Globe Mining Corporation

Teller

Miscellaneous "G"

Golden Harp Mine

Boulder

Golden Heart

Eagle

Miscellaneous "G"

Golden Hope Group

Saguache

Miscellaneous "G"

Golden Horn Mine

San Juan

Golden Islet

Gunnison

Miscellaneous "G"

Golden Ledge Group

Gilpin

Golden Mammoth Mine

Hinsdale

Miscellaneous "G"

Golden Monarch

San Juan

Miscellaneous "F"

Golden Princess

Boulder

Miscellaneous "G"

Golden Quality No. 4

Fremont

Golden Quality No. 5

Fremont

Golden Queen

Boulder

Golden Queen Mining & Milling Company

Chaffee

Miscellaneous "G"

Golden Queen Tunnel

Chaffee

Miscellaneous "G"

Golden Reward Mine

Boulder

Golden Reward Mine

Larimer

Miscellaneous "G"

Golden Rod Mine

Teller

Golden Rose

La Plata

Miscellaneous "G"

Golden Rule

Clear Creek

Miscellaneous "G"

Golden Splendor

Custer

Miscellaneous "G"

Golden Stairs

Gunnison

Miscellaneous "G"

Golden Star Mine

Gilpin

Miscellaneous "G"

Golden Sun Mine

Gilpin

Golden Thread Mining Company

Lake

Miscellaneous "G"

Golden Treasure Tunnel

Saguache

Miscellaneous "G"

Golden Triangle Mine

Boulder

Miscellaneous "G"

Golden Wonder

Hinsdale

Golden Wonder Mine

Chaffee

Miscellaneous "G"

Goldenrod Mine

Larimer

Miscellaneous "G"

Goldite Mine

Fremont

Miscellaneous G

Goldora Mine

Larimer

Goldsmith Maid Mine

Boulder

Goliath Mining Company

Lake

Miscellaneous "G"

Gomer Mine

Gilpin

Miscellaneous "G"

Gonella Claim

Gilpin

Miscellaneous "G"

Good Fortune Mine

Gilpin

Miscellaneous "G"

Good Friday Mine

Boulder

Good Hope

Boulder

Miscellaneous "G"

Good Hope

Fremont

Miscellaneous G

Good Hope

Garfield

Miscellaneous G

Good Hope

La Plata

Good Hope

Montrose

Good Hope - Vulcan

Gunnison

Good Hope Mine

San Juan

Good Lock Mine

Clear Creek

Miscellaneous "G"

Good Luck

Clear Creek

Miscellaneous "G"

Good Luck Group

Hinsdale

Good Luck Mine

Gilpin

Miscellaneous "G"

Goodwill Tunnel

Teller

Gopher

San Miguel

Gordon

Lake

Miscellaneous "G"

Gordon Smith & Company

Mesa

Miscellaneous "S"

Gordon Smith & Company

Montrose

Gordon Tiger

Lake

Gordova

Boulder

Miscellaneous "G"

Gore Creek Project

Eagle

Miscellaneous "G"

Gormax Mine No. 1

Mineral

Miscellaneous "G"

Governor

San Miguel

Governor Group

Ouray

Governor Mine

Summit

G-Pit

Clear Creek

Grace

Lake

Miscellaneous "G"

Grace

Montrose

Miscellaneous "G"

Grace Greenwood

Teller

Grace Mine

Boulder

Grace Mine

Gilpin

Graham Mine

Gilpin

Miscellaneous "G"

Grahamite

Grand

Miscellaneous "G"

Granby Dam

Grand

Grand

Teller

Miscellaneous "G"

Grand & Clear Creek

Clear Creek

Grand Army

Mineral

Miscellaneous "G"

Grand County Mine

Boulder

Grand Dad #2

Montrose

Miscellaneous "G"

Grand Republic

Boulder

Grand Union Mine

Gilpin

Grand Valley Irrigation Project #12R18896

Mesa

Miscellaneous "G"

Grand Valley Oil & Shale Company

Garfield

Miscellaneous G

Grand View Group

Clear Creek

Miscellaneous "G"

Grand View Mine

Boulder

Grand View Mine

Gilpin

Miscellaneous "G"

Grand View Mines

Garfield

Granite Hill

Teller

Miscellaneous "G"

Granite Hill Mining & Milling Company

Teller

Miscellaneous "G"

Granite Mine

Gilpin

Miscellaneous "G"

Granite Mine

Lake

Granite Mining

Chaffee

Granite Mountain

Gunnison

Miscellaneous "G"

Grant

Gilpin

Miscellaneous "G"

Grant Mine

Boulder

Grant's Claim

San Miguel

Grapevine

Jefferson

Graphic Mine

Boulder

Grass Roots

Montrose

Grassy Creek Strip

Routt

Grassy Flats

San Miguel

Grassy Hill

La Plata

Grassy Hill Group

San Miguel

Miscellaneous "G"

Gravel Bank @ Mile Post 25

Teller

Miscellaneous "G"

Gravel Bank @ Mile Post 38

Teller

Miscellaneous "G"

Gray Back Mining & Milling Company

Costilla

Miscellaneous "G"

Gray Bird

Boulder

Miscellaneous "G"

Gray Claim

Montrose

Miscellaneous "G"

Gray Copper Mine

Boulder

Gray Eagle Gold Mines Company

Gunnison

Miscellaneous "G"

Gray Eagle Leasing Company

Lake

Miscellaneous "G"

Gray Eagle Mine

Boulder

Gray Eagle Mine

Teller

Gray Hound Mine

Ouray

Miscellaneous "G"

Gray Jeep Claims

Gunnison

Miscellaneous "G"

Grayback Mine

Boulder

Miscellaneous "G"

Graysill Group

Saguache

Great Britain Mine

Boulder

Great Divide Mine

San Juan

Great Eastern

Park

Miscellaneous "G"

Great Eastern

San Juan

Great Eastern Mine

Park

Great Hesper

Mesa

Miscellaneous "G"

Great Hope

Lake

Miscellaneous "G"

Great Mammoth

Gilpin

Great West Mine

Boulder

Great Western Gold Mining Company

Teller

Miscellaneous "G"

Great Western Group

Montrose

Great Western Mine

Ouray

Great Western Mine

Park

Greater Colorado Mining & Reduction Company

Teller

Miscellaneous "G"

Greater Gold Belt Mines Company

Teller

Miscellaneous "G"

Green Back

Montrose

Green Hawk

Gunnison

Miscellaneous "G"

Green Lode Claim

Fremont

Miscellaneous G

Green Mountain Dam

Summit

Green Mountain Girl

Summit

Green Mountain Mining Company

Fremont

Miscellaneous G

Green Mt. Copper

Fremont

Green River Mine

Routt

Miscellaneous "G"

Green River Mining

Clear Creek

Green Spar Mine

Boulder

Miscellaneous "G"

Green Valley No. 2

Delta

Greenback Mining Company

Lake

Greenhorn Gold Mining Company

Fremont

Miscellaneous G

Greenlee - Stevenson

Saguache

Miscellaneous "G"

Greenside Mine

Gilpin

Greenville Mine

Routt

Greenwald Tunnel

Lake

Miscellaneous "G"

Gregory Oil Shale Holdings

Garfield

Miscellaneous G

Greves Tunnel

Hinsdale

Miscellaneous "G"

Grey Copper Mining & Milling Company

Ouray

Miscellaneous "G"

Grey Creek

Las Animas

Grey Eagle Group

San Juan

Miscellaneous "F"

Grey Eagle Mine

Garfield

Grey Falcon

Gunnison

Miscellaneous "G"

Griffin Mine

Lake

Miscellaneous "G"

Griffith Mine

Clear Creek

Grizzley

Gilpin

Miscellaneous "G"

Grizzley Bear

Ouray

Miscellaneous "G"

Grizzly Bear Group

Ouray

Miscellaneous "N"

Grizzly Creek Strip

Jackson

Grizzly Gulch Group

Clear Creek

Ground Hog

San Miguel

Ground Hog Mine

Eagle

Ground Hog Mine

Summit

Groundhog Tunnel

Lake

Miscellaneous "G"

Grouse Mine

Boulder

Miscellaneous "G"

Grover

Clear Creek

Grover Cleveland Tunnel

Saguache

Miscellaneous "G"

Grunwald

San Miguel

Miscellaneous "G"

Guadalcanal

Montrose

Guadaloupe Mine

Ouray

Gum Tree Mine

Clear Creek

Gumaer Mine

Fremont

Gunnell Mine

Gilpin

Miscellaneous "G"

Gunnison

Saguache

Miscellaneous "G"

Gunnison Copper Mine