Mine

County

Notes

D & J Mine

Saguache

D & RGW Construction Company

Fremont

D & S. L. Railway Tunnel No. 10

Boulder

Miscellaneous "D"

D. A. Sullivan Claim

Garfield

Miscellaneous D

Dail Owen

Boulder

Miscellaneous "D"

Daisy Mine

Gunnison

Dakota

Montrose

Miscellaneous "D"

Dakota Leasing Company

Eagle

Miscellaneous "D"

Dalco

Hinsdale

Miscellaneous D

Dalelu Group

Mesa

Miscellaneous "D"

Dallas Mine

Gilpin

Miscellaneous "D"

Damon and Hardwood

Teller

Dan

San Miguel

Miscellaneous "D"

Dan Kelly Drilling Company

Mesa

Miscellaneous "D"

Dan Patch

Montrose

Dana Mining Company

Boulder

Miscellaneous "D"

Dante Mine

Teller

Dara Mine

San Juan

Dauser Mine and Mill

Park

Davenport Tunnel

Clear Creek

Davey Leasing & Mining Company

Ouray

Miscellaneous "D"

David Lode

Boulder

Davis Tunnel

San Miguel

Miscellaneous "D"

Davy Leasing & Mining Company

San Juan

Miscellaneous "D"

Dawn of Hope

Hinsdale

Miscellaneous D

Dawn Tunnel

Custer

Miscellaneous "D"

Day Spring

Gilpin

Miscellaneous "D"

Day Star Mines

Gunnison

De Beque Shale Oil Company

Garfield

Miscellaneous D

De Caprivi Mine

Clear Creek

De Lux Mine

Gilpin

Miscellaneous "D"

Dead Horse Mine

Teller

Miscellaneous "D"

Dead Jack Mine

Clear Creek

Miscellaneous "D"

Dead Medicine Mine

Boulder

Miscellaneous "D"

Dead Shot Mine

Teller

Deadwood

San Miguel

Miscellaneous "D"

Deadwood Mine

Teller

Deal Mining Company

Mesa

Miscellaneous "D"

Dear Runs

Mesa

Miscellaneous "D"

Debbie Jean

Fremont

Miscellaneous D

Deceiver

Custer

Deer Season #1

Montrose

Miscellaneous "D"

Deer Shaft

Montrose

Defender Mine

Custer

Degge - Clark Tungsten Mining Milling & Refining Company

Boulder

Miscellaneous "D"

Del Oro #2

Saguache

Del Oro Mines

Lake

Miscellaneous "D"

Delano - Jer - Bar Group

San Juan

Delaware

Gilpin

Delaware Mine

Chaffee

Miscellaneous "D"

Delaware Mine

Summit

Delmonico

Gilpin

Delmonico Mine

Teller

Delores & Eleanor

Gilpin

Miscellaneous "D"

Delta

San Miguel

Miscellaneous "D"

Deluxe Shaft

San Miguel

Democracy Shaft

Gilpin

Miscellaneous "D"

Demsey

Park

Dendet Gold Mining Corporation

Gilpin

Miscellaneous "D"

Dendet Mining Company

Gilpin

Miscellaneous "D"

Denton Strip

Routt

Denver

Custer

Denver - Boulder Tungsten P & D Company

Boulder

Denver - Napoleon

San Juan

Miscellaneous "D"

Denver & Rio Grande Western Railroad Tunnel

Mesa

Miscellaneous "D"

Denver Group

Boulder

Miscellaneous "D"

Denver Mine

Montrose

Miscellaneous "D"

Denver Mine

Summit

Denver Mining & Manufacturing Company

Chaffee

Miscellaneous "D"

Denver Mining & Milling

Lake

Denver Municipal Water Project

Boulder

Miscellaneous "D"

Denver No. 2

Lake

Miscellaneous "D"

Denver Tungsten Mining & Milling Company

Boulder

Miscellaneous "D"

Denver Tunnel

Clear Creek

Denver Tunnel Company

Boulder

Miscellaneous "D"

Dependable #9

Saguache

Miscellaneous "D"

Depression

San Miguel

Depression Mine

Larimer

Depression No. 6

Mesa

Deremo

San Miguel

Dermo

San Miguel

Des Moines Mine

Boulder

Miscellaneous "D"

Desdemona

Chaffee

Miscellaneous "D"

Design Mines Company

Clear Creek

Miscellaneous "D"

Desperado

Rio Blanco

Detroit and Colorado Mining Company

San Juan

Detroit Group

Hinsdale

Miscellaneous D

Detroit Mine

Summit

Devercaux Brother Claims

Rio Blanco

Miscellaneous "D"

Dew Drop

Boulder

Miscellaneous "D"

Dew Drop

Gilpin

Miscellaneous "D"

Dewarest Tungsten Manufacturing Company

Boulder

Miscellaneous "D"

Deweese - Dye Dam

Custer

Miscellaneous "D"

Dewey Milling Company

Denver

Miscellaneous "D"

Dexter Mine

Clear Creek

Dexter Mine

Teller

Diamond Drillers

Rio Blanco

Miscellaneous "D"

Diamond Jack Mine

Summit

Diamond Joe Mine

Clear Creek

Diamond Lil Tunnel

Gilpin

Diamond Mountain

Clear Creek

Miscellaneous "D"

Diamond Mountain Mining Company

Clear Creek

Miscellaneous "D"

Diamond Shaft

Lake

Diana

Montrose

Dick #3

San Juan

Miscellaneous "D"

Dickie #3

San Miguel

Miscellaneous "D"

Dierks Mine

Clear Creek

Dig Gold Mine

Teller

Dig More Mining & Milling Company

Boulder

Dillion Dam Tunnel

Summit

Dime Mine

Boulder

Dinero Tunnel

Lake

Dinkirk Mine

Clear Creek

Dire Gold

San Juan

Miscellaneous "D"

Dirigo Mine & Mill

Gilpin

Dirt Merchants Construction

Gunnison

Miscellaneous "D"

Discovery #1

Park

Dismant Adit

Moffat

Miscellaneous "D"

Dividend

San Miguel

Dividend Gold Mines Company

Ouray

Miscellaneous "D"

Dixie

Mesa

Dixie Group

Larimer

Dixie Mine

Boulder

Miscellaneous "D"

Dixie Mine

Clear Creek

Dixie Mine

Custer

Doagy No. 2

Montrose

Doctor Group

Clear Creek

Doctor Jack Pot Mine

Teller

Doctor Mine

Gunnison

Dodd Group

San Juan

Miscellaneous "D"

Dodge Patent

Boulder

Miscellaneous "D"

Dolly B Shaft

Lake

Dolly Varden

Teller

Dolly Varden Mine

Boulder

Dolly Varden Mine

Hinsdale

Miscellaneous D

Dolly Varden Mine

Park

Dolmite Shaft

Lake

Dolomite

Chaffee

Dolores

Gilpin

Miscellaneous "D"

Dolores

San Miguel

Dolores Group

Montrose

Dolores Mine

Hinsdale

Miscellaneous D

Dolores River Mine

San Miguel

Dome

San Juan

Miscellaneous "D"

Dome Mine

Lake

Miscellaneous "D"

Domingo Company

San Juan

Dominion Mine

Clear Creek

Don Pedro

Summit

Donald L

Montrose

Donaldson

Clear Creek

Miscellaneous "D"

Donell Group

Larimer

Miscellaneous "D"

Donna Juanita

Clear Creek

Donna K

Montrose

Doodle Bug Gold Mining

Teller

Doolittle Mine

Boulder

Miscellaneous "D"

Doris Lode

Gilpin

Miscellaneous "D"

Doris Ruby Group

Chaffee

Dorothy

Montrose

Dorothy

Teller

Miscellaneous "D"

Dorothy May

San Miguel

Miscellaneous "D"

Dorothy Mine

Boulder

Dorothy Mine

Gilpin

Miscellaneous "D"

Dotsero Cutoff Tunnel

Eagle

Double Cross

Dolores

Double Eagle

Gilpin

Double Eagle

Park

Doublejack

Montrose

Miscellaneous "D"

Douglas Mountain Copper Mine

Moffat

Miscellaneous "D"

Dove

Clear Creek

Miscellaneous "D"

Doves Nest Extension

Clear Creek

Miscellaneous "D"

Doyle Mine

Montezuma

Doyle Schuyler Holdings

Garfield

Miscellaneous D

Dozer

Boulder

Dragon Claim

San Miguel

Miscellaneous "D"

Drake Shaft

Park

Miscellaneous "D"

Dreamer

Fremont

Miscellaneous D

Dreckshage Company

Gunnison

Driscoll Trucking Company

Fremont

Miscellaneous D

Driscoll Tunnel

Fremont

Miscellaneous D

Dropner Company

Clear Creek

Druid Mine

Gilpin

Drum Major

Park

Miscellaneous "D"

Drummond Mine

Clear Creek

Dublin Mine

Gilpin

Miscellaneous "D"

Duchess No. 1 & 2

Montrose

Duggan Adit

Montrose

Dumas Mine

Gilpin

Dump Mine

Gilpin

Miscellaneous "D"

Dumpite

Chaffee

Miscellaneous "D"

Duncan

Gunnison

Miscellaneous "D"

Duncan Mine

Clear Creek

Dunkin Mine

Summit

Dunkin Shaft

Lake

Dunmore Mine

Ouray

Dupont Tunnel

Gunnison

Durango Girl Gold Mining & Milling Company

La Plata

Durfee Mining

Mesa

Miscellaneous "D"

Durfee Wagon Drill

Mesa

Miscellaneous "D"

Durgen Tunnel

Pitkin

Durias Mine

Boulder

Dusty

Montrose

Dutch Creek # 1

Pitkin

Dutch Creek # 2

Pitkin

Dutch Park Mine

Boulder

Miscellaneous "D"

Dutchess Mine

Gilpin

Miscellaneous "D"

Dyer Mountain Extension Mine

Lake

Miscellaneous "D"

Dynamite

Montrose

Miscellaneous "D"

Dynamo

San Miguel

E - D

Saguache

Miscellaneous "E"

E. A. Alexander Mine

Ouray

Miscellaneous "A"

E. B. F. Mine

Teller

Miscellaneous "E"

E. P. Webb Drilling Company

Rio Blanco

Miscellaneous "E"

Eagen Mine

Clear Creek

Miscellaneous "E"

Eagle

Clear Creek

Miscellaneous "E"

Eagle - Hawk

Saguache

Miscellaneous "E"

Eagle - New Jersey - Zinc - Empire Zinc

Eagle

Eagle #12

Montrose

Miscellaneous "D"

Eagle & Mary Alice Claims

Hinsdale

Miscellaneous E

Eagle Bird

San Juan

Miscellaneous "E"

Eagle Coal

Weld

Eagle Mine

Clear Creek

Miscellaneous "E"

Eagle Mine

Saguache

Eagle Mine

Summit

Miscellaneous "E"

Eagle No. 5 & No. 9

Moffat

Eagle Pass Mining & Milling Company

La Plata

Eagle River Tunnel & Mining Company

Eagle

Miscellaneous "E"

Eagle Tunnel

Dolores

Miscellaneous "E"

Eagles Nest

Clear Creek

Miscellaneous "E"

Eagles Nest

Gilpin

Earl

Boulder

Miscellaneous "E"

Earl W. Lode

Gunnison

Miscellaneous "E"

Early Bird

San Juan

Miscellaneous "E"

Early Bird Mining & Milling Company

Ouray

Miscellaneous "E"

Early Morning

San Miguel

Miscellaneous "E"

East Boston Mine

Boulder

East Butte Mine

Clear Creek

East Calamity

Mesa

Miscellaneous "D"

East Columbia Mine

Boulder

East Griffith Mine

Clear Creek

Miscellaneous "E"

East Harsh Mine

Gilpin

Miscellaneous "H"

East Lake Milling & Mining Company

Eagle

Miscellaneous "E"

East Lake Mine

Clear Creek

East London

Park

Miscellaneous "E"

East Opera Box

Montrose

East Portal

Larimer

East Queen of the Hills

Mesa

East Red Mountain

Chaffee

Miscellaneous "E"

East Salt Creek

Garfield

Miscell. Coal

East Santa Fe Mine

Clear Creek

Miscellaneous "E"

East Slide Mine

Boulder

East Spavia Mine

Gilpin

East Williams Mine

Gilpin

Miscellaneous "E"

Eastern Sioux Mining Company

San Juan

Miscellaneous "E"

Eastern Star

Garfield

Eastern Star Mine

Saguache

Eastern Star Mine

San Juan

Miscellaneous "E"

Easton B

San Miguel

Eastside

Garfield

Eastside Mine

Park

Miscellaneous "E"

Eaton Holdings

Garfield

Echo No. 4 & No. 6

Montrose

Eclipse

Mesa

Miscellaneous "E"

Eclipse

San Miguel

Miscellaneous "E"

Eclipse Mine

Boulder

Eclipse Mine

Chaffee

Miscellaneous "E"

Eclipse Mine

Pitkin

Eclipse Tunnel

Lake

Economy Dump

Teller

Edna and Edna #1

Ouray

Edna Mine

Hinsdale

Miscellaneous E

Edna Mining

Lake

Edna Strip

Routt

Edwards

Gunnison

Edwards Mine

Clear Creek

Miscellaneous "E"

Ega Mining & Milling Company

Boulder

Miscellaneous "E"

Eggleston Tunnel

Conejos

Miscellaneous E

Egyptian Mine

Gilpin

Eida Tunnel

Gilpin

Miscellaneous "E"

Eight Mile

Fremont

Miscellaneous E

Eiler's Dump

Lake

Miscellaneous "E"

El Capitan

Eagle

Miscellaneous "E"

El Crest Mining Company

Teller

El Mahdi Mine

Ouray

El Paso Mine

Teller

El Plomo Mining & Reduction Company

Fremont

Miscellaneous E

El Rico

Conejos

Miscellaneous E

Elder Mine

San Miguel

Eldorado

Gilpin

Eldorado Mine

Summit

Miscellaneous "E"

Eldredge Group

Teller

Eleanor Jane & Capitol Mine

Clear Creek

Miscellaneous "E"

Electra Gold Mining & Milling Company

Eagle

Miscellaneous "E"

Electric Tunnel

Lake

Eleven Mile Canon Dam

Park

Eleven O'Clock Lode

Chaffee

Miscellaneous "E"

Elgin Smelter Dump

Lake

Eliza Tunnel

Lake

Elizabeth

Mesa

Elizabeth Group

Mesa

Miscellaneous "E"

Elizabeth Mine

Park

Miscellaneous "E"

Elk Head

Boulder

Miscellaneous "E"

Elk Head Mine

Routt

Elk Mine

San Juan

Elk Mountain Mines Company

Summit

Elk Mt. Mine

Grand

Elk Park Group

San Juan

Elk Valley

Gilpin

Elkhorn

Summit

Miscellaneous "E"

Elkhorn & Marino

Saguache

Miscellaneous "E"

Elkhorn Mine

Routt

Elkhorn Mine

Teller

Elkhorn Shaft

Lake

Elkton Mine

Teller

Ella C Mine

Boulder

Ella Craig

Mesa

Miscellaneous "E"

Ella Mine

Gilpin

Miscellaneous "E"

Ella Tunnel

Lake

Ella W. Mine

Teller

Elliott, Barber & Lincoln

Clear Creek

Ellis Mine

Teller

Ellison

San Miguel

Ellithorpe Shaft

Teller

Miscellaneous "E"

Elmer & Bents Shafts

Teller

Miscellaneous "E"

Elmore Tunnel

Gilpin

Miscellaneous "E"

Elsie Mine

Boulder

Elsinore Mine

Gilpin

Miscellaneous "E"

Elva Elma Tunnel

Lake

Miscellaneous "E"

Ely

San Miguel

Miscellaneous "E"

Emancipation Group

Clear Creek

Miscellaneous "E"

Emancipation Mine

Boulder

Embargo

Saguache

Miscellaneous "E"

Emerald Exploration Company

Chaffee

Miscellaneous "E"

Emil Johnson Lease

Ouray

Emily Mine & Mill

Boulder

Miscellaneous "E"

Emily Mining Company

Lake

Miscellaneous "E"

Emma L.

Teller

Emma Lou

Pitkin

Miscellaneous "E"

Emma May Mine

Montrose

Miscellaneous "E"

Emma Mine

Clear Creek

Miscellaneous "E"

Emma Mine

Dolores

Emma Tunnel

San Juan

Emmett Mine

Boulder

Emmons

Delta

Emperius Mine

Mineral

Empire

Montrose

Miscellaneous "E"

Empire

San Miguel

Miscellaneous "E"

Empire Chief

Hinsdale

Empire City Mine

Clear Creek

Miscellaneous "E"

Empire Mine

Boulder

Empire Tunnel

Clear Creek

Miscellaneous "E"

Empire Zinc Company

Lake

Empire Zinc Division

Gunnison

Miscellaneous "E"

Empress

Clear Creek

Empress Josephine

Saguache

Empress Mine

Boulder

Empress Mine

Summit

Miscellaneous "E"

Empress Tunnel

Clear Creek

End of the Trail

Garfield

Endeavor

Clear Creek

Miscellaneous "E"

Endner Mine

Gunnison

Miscellaneous "E"

Endomile

Jackson

Energy Strip #1, 2, 3

Routt

Engineers Luck Mine

Teller

Miscellaneous "E"

England Gold Mining & Milling

Clear Creek

Miscellaneous "E"

Engleville

Las Animas

Enterprise

Gilpin

Miscellaneous "E"

Enterprise Mine

Boulder

Enterprise Mine

Gunnison

Enterprise Mine

Teller

Miscellaneous "E"

Enterprise Mining Company

Clear Creek

Miscellaneous "E"

Enterprise Strip

Delta

Equator Mine

Boulder

Miscellaneous "E"

Equinox

Montrose

Equity Consolidated Mines Company

Clear Creek

Miscellaneous "E"

Equity Mine

Mineral

Erickson Mine

Summit

Erie #28

Saguache

Miscellaneous "E"

Erie Mines Company

Teller

Miscellaneous "E"

Escanaba

Boulder

Esmeralda

San Juan

Esmeralda Mine

Boulder

Miscellaneous "E"

Esmeralda Mine

Clear Creek

Esmerelda Mine

Park

Miscellaneous "E"

Esperanza Mine

Saguache

Esperanza Tunnel

Clear Creek

Miscellaneous "E"

Essex Mine

Gilpin

Essie Mine

Saguache

Estel Crosscut

San Miguel

Miscellaneous "E"

Estelle Company

San Juan

Estrella Mining Compnay

Lake

Miscellaneous "E"

Ethiopean Mine

Gunnison

Etigrade

Summit

Miscellaneous "E"

Etna Mine

Park

Etta M Mine

Summit

Ettretura Mining Company

Lake

Miscellaneous "E"

Euclid Group

Montezuma

Eula Belle

Montrose

Eureka

Gunnison

Eureka

Summit

Eureka Group

Clear Creek

Miscellaneous "E"

Eureka Mine

Boulder

Eureka Mine

Boulder

Miscellaneous "E"

Eureka Mine

Gilpin

Eureka Mine

Lake

Eureka Mining Company

Chaffee

Miscellaneous "E"

European & Park Group

Clear Creek

Eurydice Mine

Conejos

Eva

Montrose

Eva

Ouray

Eva Group

Clear Creek

Eva L. Consolidated Mines Company

Teller

Miscellaneous "E"

Evans Groups

Boulder

Evelyn Shaft

Lake

Evening Star

Eagle

Miscellaneous "E"

Evening Star

Mesa

Miscellaneous "E"

Evening Star

Park

Evening Star No. 1 & 2

Montrose

Everett

Clear Creek

Everett Development Company

Saguache

Miscellaneous "H"

Everett Mine

Clear Creek

Evergreen Mine

Gilpin

Excelsior Mine

Park

Excelsior Mine

Summit

Excelsior Mine & Mill

Boulder

Miscellaneous "E"

Exchequer Mining & Leasing Company

Lake

Miscellaneous "E"

Expansion Gold Mining & Leasing Company

La Plata

Miscellaneous "E"

Expectation Group

Dolores

Exploration and Shaft Drilling Company, Incorporated

Montrose

Miscellaneous "E"

Extension

Clear Creek

Ezra R Mine

San Juan