Mine

County

Notes

T & T Drilling Company

San Miguel

Miscellaneous "T"

T. N. T. #1 & #3

Montrose

T. P. M. Leasing Company

Eagle

Tabor's Luck

San Miguel

Miscellaneous "T"

Tacoma Mine

Gilpin

Miscellaneous "T"

Taff Oil Shale

Garfield

Tail Holt

San Miguel

Taisish

Lake

Miscellaneous "T"

Tam O' Shanter

Pitkin

Tamasoa

Clear Creek

Miscellaneous "T"

Tambourine Mine

Boulder

Tammany

Boulder

Tango

Montrose

Tarbox Tunnel

Boulder

Tarn

San Juan

Tarryall Gold and Placer

Park

Miscellaneous "T"

Tateman Shaft

Teller

Tatum Exploration Drilling

San Miguel

Miscellaneous "T"

Taylor Gulch

Teller

Miscellaneous "T"

Taylor Mining Syndicate

Chaffee

Miscellaneous "T"

Taylor Tunnel

Eagle

Miscellaneous "T"

Tea Pot Dome Mine

San Miguel

Miscellaneous "T"

Teagarden Mine

Clear Creek

Teakee

Garfield

Miscellaneous T

Teapot Dome

Montrose

Teddy Bear Mine

Clear Creek

Tek Mining, Milling & Leasing Company

Clear Creek

Miscellaneous "T"

Telegraph

Gilpin

Miscellaneous "T"

Telescope Mountain Mining

San Juan

Teller County Air Company

Teller

Telluride

Montrose

Miscellaneous "T"

Tempest

San Juan

Miscellaneous "T"

Tempest Mine

Summit

Miscellaneous "T"

Ten Mile Tunnel

Summit

Tenderfoot - R. A. P. Groups

Montezuma

Miscellaneous "T"

Tenderfoot Hill Consolidated Mining Company

Teller

Miscellaneous "T"

Tenderfoot Mine

Boulder

Tenderfoot Mine

Lake

Tenderfoot Mining Company

Teller

Tennessee #1

Park

Miscellaneous "T"

Tennessee Mine

Boulder

Tennessee Mine

Gunnison

Tennessee Mining, Milling & Tunnel Company

Clear Creek

Miscellaneous "T"

Tennessee Pass Railroad Tunnel

Lake

Teresa Tunnel

Mineral

Miscellaneous "T"

Ternahan Mine

Gunnison

Miscellaneous T

Terra Haute Gold & Silver Mining Company

Clear Creek

Miscellaneous "T"

Terrible Dunderberg

Clear Creek

Terrible Mine

Custer

Terry

Boulder

Miscellaneous "T"

Teton Exploration

Montrose

Teutonic Mine

Teller

Texas Chief Group

La Plata

Texas Mine

Boulder

Miscellaneous "T"

Texas Mine

Clear Creek

Thatcher Brothers Company

Hinsdale

Miscellaneous "T"

The Cave

Mesa

Thelma Mine

San Juan

Miscellaneous "T"

Theresa Shaft Trail Tunnel

Teller

Thielen

Lake

Miscellaneous "T"

Third Adventure Mining Company

Lake

Miscellaneous "T"

Third Venture Mining Company

Lake

Miscellaneous "T"

Thistledown Mine

Ouray

Thodab

Larimer

Miscellaneous "T"

Thodave

Larimer

Miscellaneous "T"

Thomas & Anthony

Lake

Miscellaneous "T"

Thompson Creek

Pitkin

Thompson Leasing Company

Eagle

Miscellaneous "T"

Thompson Mine

Teller

Thorn

Fremont

Three Brothers

Boulder

Three Brothers

Park

Miscellaneous "T"

Three B's Group

Gilpin

Three Jacks

Montrose

Three Kings Mine

Summit

Three Sisters

Moffat

Miscellaneous "T"

Three Sisters Mine

Chaffee

Miscellaneous "T"

Thunder Mine

Montezuma

Thunder Tunnel

San Juan

Thunderbird

Gilpin

Thunderbird Mine

Gunnison

Miscellaneous T

Thunderbolt

Montrose

Thunderbolt Mine

Boulder

Miscellaneous "T"

Thundercloud & Sunspot

Mesa

Tiger and Shields

Lake

Tiger Mine

Gilpin

Miscellaneous "T"

Tiger Mine

Summit

Tilden

Teller

Miscellaneous "T"

Tilden Mine

Chaffee

Miscellaneous "T"

Timberline Mine

Fremont

Times Mine

Boulder

Tiny #1 & 2

San Miguel

Tioga

Gunnison

Miscellaneous T

Tip Top

Boulder

Tip Top Claims

Chaffee

Miscellaneous "T"

Tip Top Mine

Eagle

Tip Top Mine

Summit

Tippecanoe Mine

Boulder

Titan

Gunnison

Titan Products Company

Gunnison

Miscellaneous T

Titusville

San Juan

To Ka Han Development & Mining Company

Summit

Miscellaneous "T"

Todd & William Company

San Miguel

Miscellaneous "T"

Togo

Gilpin

Toledo Mine

Clear Creek

Tolendal Mining Company

Lake

Miscellaneous "T"

Toll Gate

Gilpin

Tolland County Tunnel

Clear Creek

Toltec Mine

San Juan

Tom & Jerry Mine

Summit

Miscellaneous "T"

Tom Collins Mine

Chaffee

Miscellaneous "T"

Tom Moore Mine

Clear Creek

Tom Moore Mine

San Juan

Tom Thumb & M. R. Claims

Lake

Miscellaneous "T"

Tom Thumb Mine

Saguache

Tom, Dick & Harry Mining

Chaffee

Tomahawk

La Plata

Tomahawk Strip

Delta

Tomboy

Custer

Miscellaneous "T"

Tomboy

Custer

Tomboy Mine

San Miguel

Tommy White Drilling Company

San Miguel

Miscellaneous "W"

Tomsick

Custer

Miscellaneous "T"

Tonopah Ajax

Teller

Too High

Montrose

Top Coal

Denver

Topaz

San Miguel

Tornado Group

Saguache

Miscellaneous "T"

Tornado Mine

Boulder

Miscellaneous "T"

Toronto Mine

Gilpin

Torpedo Eclipse

Ouray

Torpedo Mine

Clear Creek

Tourtellotte Park Group

Pitkin

Miscellaneous "T"

Town House

Montrose

Town Lot

Boulder

Trace Elements Corporation

Moffat

Tracy Brothers Drilling

San Miguel

Miscellaneous "T"

Trafalgar

Chaffee

Miscellaneous "T"

Trail Creek

Grand

Miscellaneous "T"

Trail Creek Project

Clear Creek

Miscellaneous "T"

Trail Mines Incorporated

El Paso

Miscellaneous "T"

Tramp

Montrose

Trans-World

Mesa

Miscellaneous "T"

Trapper Mine

Moffat

Travis Gulch Mining Company

Gilpin

Treasure Comstock Mining, Milling & Tunnel Company

Rio Grande

Miscellaneous "T"

Treasure Key

Gilpin

Treasure Mine

San Juan

Miscellaneous "T"

Treasure Mountain Company

Routt

Treasure Mountain Gold Mining Company

San Juan

Treasure Mountain Project

San Juan

Miscellaneous "T"

Treasure Vault Mine

Clear Creek

Tremont Mining Company

Clear Creek

Miscellaneous "T"

Tremont Mining Company

Gilpin

Trevillion Tunnel

Clear Creek

Miscellaneous "T"

Triangulation

Montrose

Trilby Lode

San Juan

Trinidad Basin Strip

Las Animas

Trinidad Lake Project

Las Animas

Trio

Boulder

Miscellaneous "T"

Tripod Group

Montrose

Trisha Lee Mine

Clear Creek

Triumph

Mesa

Miscellaneous "T"

Triumph Mine

Lake

Trojan No. 20

Mesa

Tropic Mine

Clear Creek

Troublesome Mine

Gilpin

Trout Creek No. 1

Routt

Troy Mining Company

Park

Miscellaneous "T"

Truchas Limited

Mesa

Miscellaneous "T"

Truchas Limited

San Miguel

Miscellaneous "T"

True Blue Mine

Gunnison

Tucson Mine

Lake

Tungsten Development Company

Boulder

Miscellaneous "T"

Tungsten King

Gilpin

Miscellaneous "T"

Tungsten Mine

Boulder

Tungsten Mines Company

Boulder

Tungsten Mountain Mines Company

Boulder

Miscellaneous "T"

Tungsten Production Company Incorporated

Boulder

Tungsten Products Company

Boulder

Tungsten Uranium Incorporated

Rio Blanco

Miscellaneous "T"

Tunnel Lode No. 3

Clear Creek

Miscellaneous "T"

Turner Mine

Clear Creek

Turquoise Chief

Lake

Miscellaneous "T"

Turquoise Mine

Saguache

Turret Copper Company

Chaffee

Turret Independence Mining Company

Chaffee

Miscellaneous "T"

Turret Mining & Milling Company

Chaffee

Miscellaneous "T"

Twenty One

El Paso

Miscellaneous "T"

Twenty Six

Custer

Miscellaneous "T"

Twenty Two Mine

Montezuma

Miscellaneous "T"

Twilight #1

Montrose

Twilight Lode

San Juan

Twin Brothers Mine

Boulder

Twin Butte

Gilpin

Twin Buttes

Gilpin

Miscellaneous "T"

Twin Canyon Group

Montezuma

Twin Canyon Group

Montrose

Twin Lakes Mining & Milling Company

Lake

Miscellaneous "T"

Twin Lakes Water Tunnel

Pitkin

Twin Lode Mine

Clear Creek

Twin Pines

Fremont

Twin Ports & Empire

Clear Creek

Twin Sister

Boulder

Miscellaneous "T"

Two Bar

San Miguel

Miscellaneous "T"

Two Bit Mining Company

Lake

Miscellaneous "T"

Two Bits Mine

Montrose

Miscellaneous "T"

Two Brothers Gold Mining & Milling

Boulder

Miscellaneous "T"

Two Forks Dam Site Project

Jefferson

Miscellaneous T

Two Kids

Ouray

Miscellaneous "T"

Two Lassies Mine

Gilpin

Two Sisters

Gilpin

Two Sisters Mine

Boulder

U - Naweep

Mesa

U & V Alloys Corporation

Mesa

Miscellaneous "U"

U. C. N. C.

Mesa

U. C. N. C.

Montrose

U. C. N. C. Mining Department

Dolores

Miscellaneous "U"

U. M. U. C. Group

Mesa

Miscellaneous "U"

U. P.

Boulder

Miscellaneous "U"

U. S. Bureau of Reclamation

Gunnison

U. S. Bureau of Reclamation

Mesa

Miscellaneous "U"

U. S. Grant

Montrose

U. S. Treasury Mine

Ouray

Miscellaneous "U"

U. S. V.

San Miguel

U. S. Vanadium Corporation

Garfield

U. S. Vanadium Salt Works

Montrose

Uintah

San Miguel

Uintah Basin Producing and Refining Company

Garfield

Miscellaneous U

Ultimate Tunnel

Mineral

Miscellaneous "U"

Uncle Sam

Montrose

Uncle Sam

Teller

Uncle Sam

San Miguel

Uncle Sam Mine

Ouray

Uncompahgre #1

Saguache

Miscellaneous "U"

Uncompahgre Chief

San Juan

Miscellaneous "U"

Undecided Group

Grand

Miscellaneous "U"

Undine Mine

Gunnison

Miscellaneous U & V

Unexpected Claim

Teller

Miscellaneous "U"

Unexpected Mine

Gilpin

Miscellaneous "U"

Union Carbide Nuclear Corporation

Dolores

Miscellaneous "U"

Union Carbonite Mine

Dolores

Union Leasing Company

Teller

Miscellaneous "U"

Union Number Five Mine

Park

Union Pacific

Boulder

Union Pacific Rail Road Oil Development Department

Jefferson

Miscellaneous U

Union Shale Plants

Garfield

Unit Mine

Gilpin

Miscellaneous "U"

Unit Train Loadout Facility

Mesa

Miscellaneous "U"

Unitah Leasing Company

Denver

Miscellaneous "U"

United Carnolite Products Company

Mesa

Miscellaneous "S"

United Empire Group

Boulder

United Gold Mines

Teller

United Imperial Mining

Clear Creek

United Investors Gold Mines & Tunnel Company

Clear Creek

Miscellaneous "W"

United Metals & Copper Company

Boulder

Miscellaneous "U"

United Sand & Gravel

Mesa

United States Bureau of Reclamation

Montrose

Miscellaneous "U"

United States Vanadium Corporation

Montrose

Miscellaneous "U"

Unity Developing Company

Mesa

Miscellaneous "S"

Universal Manufacturing & Sales Company

Gunnison

Miscellaneous U & V

Universal Ore Reduction Company

Denver

Universal Refractory Ore

Boulder

Unknown Lease

Lake

Miscellaneous "U"

Upper Bushwaker

Pitkin

Upper Dead Pine Mine

Teller

Upper Granite Mine

Teller

Upper Swan Tunnel

Dolores

Up-to-Date Mine

Boulder

Ura

Montrose

Urad Mine

Clear Creek

Urado Uranium Corporation

Mesa

Miscellaneous "U"

Uranium Girl

Montrose

Uranium Peak

Rio Blanco

Miscellaneous "U"

Uranium Queen

La Plata

Miscellaneous "U"

Uranium Queen Mine

Jefferson

Miscellaneous U

Urantah

Mesa

Miscellaneous "U"

Uranus Mining Company

Gilpin

Miscellaneous "U"

Uravan #2

Montrose

US Vanadium Corporation

Rio Blanco

USBM Shaft

Rio Blanco

Utah Construction Company

Chaffee

Utah Construction Company

Eagle

Miscellaneous "U"

Utah Tunnel

Summit

Miscellaneous "U"

Utarado Mining Company

Mesa

Miscellaneous "U"

Ute & Ullay Group

Hinsdale

Ute Gold Mining Company

Park

Ute Mine No. 4

Montrose

Miscellaneous "U"

Ute Rock Group

Garfield

Miscellaneous U

Ute Water Tunnel

Mesa

Utica Mining Corporation

Boulder

Utida

Mesa

Miscellaneous "U"

Vacation Mine

Montrose

Miscellaneous "V"

Vadium Corporation of America

Montrose

Vagabond Mine & Mill

Larimer

Miscellaneous "V"

Valentine

Clear Creek

Valentine

Montrose

Miscellaneous "V"

Valkyrie Group

Ouray

Miscellaneous "V"

Vallejo Mine

Saguache

Valley

Saguache

Miscellaneous "V"

Valley Forge

San Juan

Valley Forge Mine

Boulder

Miscellaneous "V"

Valley Mine

Lake

Valley Queen Mine

Costilla

Valley View

Montrose

Valley View Claims

La Plata

Miscellaneous "V"

Valley View Group

Gunnison

Valley View No. 1, 2, 3, 4

Chaffee

Miscellaneous "V"

Van Group

Montrose

Vanadite

Montrose

Vanadium

Garfield

Miscellaneous V

Vanadium

San Miguel

Vanadium Corporation of America

Boulder

Miscellaneous "V"

Vanadium Corporation of America

Dolores

Vanadium King

Montrose

Vanadium Queen

San Miguel

Vanaking

Mesa

Miscellaneous "V"

Vandalia Copper Company

Huerfano

Vanden View

Montrose

Vanderbelt

Summit

Miscellaneous "V"

Vanura

San Miguel

Miscellaneous "V"

Varney Tunnel

Pitkin

Vasco Group

Boulder

Vasquez Jones Pass Tunnel

Grand

Vasquez Tunnel

Clear Creek

Vay Claims

San Juan

Vega Dam Water Tunnel

Mesa

Velvet Valley Rainbow

Gilpin

Miscellaneous "V"

Venir Mine

Lake

Vento

Fremont

Ventura Oil Fields

Garfield

Venture

Montrose

Miscellaneous "V"

Venture Mine

Gunnison

Miscellaneous U & V

Verde Mining

Custer

Vermillion Mines & Reduction Company

Gilpin

Miscellaneous "V"

Vermillion Mining Company

Gilpin

Miscellaneous "V"

Vermillion Tunnel

San Juan

Miscellaneous "V"

Vernon Mining

Ouray

Vesuvius Mine

Lake

Miscellaneous "V"

Veta Glad

San Miguel

Miscellaneous "V"

Veta Mad

San Miguel

Miscellaneous "V"

Veta Wad

San Miguel

Miscellaneous "V"

Vicinity

Boulder

Miscellaneous "V"

Vickery Mine

Boulder

Miscellaneous "V"

Victor

Boulder

Victor #3 & 6

San Miguel

Victor Mine

Boulder

Miscellaneous "V"

Victor Mine

Clear Creek

Miscellaneous "V"

Victor Mine

Gunnison

Victor Mine

Teller

Victoria Mine

Boulder

Victoria Mine

Gilpin

Victory

Boulder

Victory #3

La Plata

Victory Gold and Silver

Park

Victory Mine

Gunnison

Victory Tunnel

Summit

Videll Mining Company

Conejos

Miscellaneous V

Vidler Tunnel

Clear Creek

Miscellaneous "V"

Vienna Mine

Saguache

Miscellaneous "V"

View of the Park

Hinsdale

Viking Strip

Jackson

Villa Grove Turquoise

Saguache

Villa Mine

Clear Creek

Village Belle

Jackson

Vindicator

Teller

Vinnie Mine

Lake

Violet Ray Mine

Boulder

Virgin

Montrose

Virginia

Custer

Miscellaneous "V"

Virginia

Gilpin

Miscellaneous "V"

Virginia Canyon

Clear Creek

Virginia City Mine

Clear Creek

Virginia Mine

Boulder

Miscellaneous "V"

Vulcan Lode

Custer

Miscellaneous "V"

Vulcan Mine

Clear Creek

Miscellaneous "V"

Vulcan Project

Gunnison

Vulcan Townsite & Mining Company

El Paso

Miscellaneous "V"

Vulcan Tunnel

Custer

Vulcano Mine

Teller

Vulture

San Juan

Miscellaneous "V"