Mines in Jefferson County, Colorado

Jefferson County, Colorado has 459 mine and mineral deposit locations documented in federal records from the USGS and MSHA. 201 of these are currently active mining operations. The most commonly recorded commodity is clay, with 68 sites. The table below lists all recorded mines in the county with links to individual site details.

All Mines in Jefferson County

Mine	Commodity	Type	Status	Source
Amrize Morrison Quarry	Crushed, Broken Granite	Surface	Active	MSHA
Arcosa Boulder Plant #1604	Common Shale	Surface	Active	MSHA
Church Harvey Mine	Common Clays NEC	Surface	Active	MSHA
Jeffco Gravel Mine	Construction Sand and Gravel	Surface	Active	MSHA
Ralston Quarry	Crushed, Broken Stone NEC	Surface	Active	MSHA
Spec Agg Quarry	Crushed, Broken Sandstone	Surface	Active	MSHA
Allied Dirt Div Green Mtn Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Amax Mill	Uranium	Processing Plant	Producer	MRDS
Apex #10 Clay Pit	Fire Clay (Refractory)		Producer	MRDS
Appel Lease	Uranium		Producer	MRDS
Ascension Mine	Uranium		Producer	MRDS
B Gilman Ranch Pegmatite	Feldspar	Surface	Producer	MRDS
Bachman Ranch Pegmatite	Feldspar	Surface	Producer	MRDS
Bandimere	Sand and Gravel, Construction	Surface	Producer	MRDS
Bear Creek	Gypsum-Anhydrite	Surface	Producer	MRDS
Bender	Fire Clay (Refractory)		Producer	MRDS
Bergen Park Pit	Clay	Surface	Producer	MRDS
Bertrand Quarry	Stone, Crushed/Broken		Producer	MRDS
Bette No 1	Feldspar	Surface	Producer	MRDS
Binder Clay Mine	Fire Clay (Refractory)		Producer	MRDS
Black Clay Mine	Fire Clay (Refractory)		Producer	MRDS
Black Clay Mine	Clay	Surface	Producer	MRDS
Black Knight	Uranium	Surface	Producer	MRDS
Brannan Pit No 12	Sand and Gravel, Construction	Surface	Producer	MRDS
Brannan Pit No 6	Sand and Gravel, Construction	Surface	Producer	MRDS
Brannon Pit No 17	Clay	Surface	Producer	MRDS
Brown Silica	Fire Clay (Refractory)		Producer	MRDS
Brown Silica	Clay	Surface	Producer	MRDS
Buff Pit	Fire Clay (Refractory)		Producer	MRDS
Buffalo Mine	Fluorine-Fluorite	Surface	Producer	MRDS
Bull Hill Claim	Fluorine-Fluorite		Producer	MRDS
Burroughs Feldspar Mine	Feldspar		Producer	MRDS
Butte #1	Feldspar, Quartz, Fluorine-Fluorite		Producer	MRDS
C. P. Hoyts Pits	Clay		Producer	MRDS
Caldwel Pit	Clay	Surface	Producer	MRDS
Caldwell	Fire Clay (Refractory)		Producer	MRDS
Carbon Mountain	Sand and Gravel, Construction	Surface	Producer	MRDS
Catherine No 1 Claim	Feldspar	Surface	Producer	MRDS
Centennial Cone	Beryllium	Surface	Producer	MRDS
Centennial Cone Prospect	Beryllium		Producer	MRDS
Chatfield Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Church Pit	Clay	Surface	Producer	MRDS
Clear Creek	Garnet	Surface	Producer	MRDS
Coal Creek	Fluorine-Fluorite	Surface	Producer	MRDS
Coors Clay Mines	Fire Clay (Refractory)		Producer	MRDS
Coors Pegmatite & Feldspap Quarry	Feldspar	Surface	Producer	MRDS
Coors Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
Coors Sand & Gravel Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Coors Wash Plant	Sand and Gravel, Construction	Processing Plant	Producer	MRDS
Crane Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Cressman Gulch	Beryllium, Mica, Feldspar		Producer	MRDS
Cyrtolite-Bearing Pegmatite Deposi	Zirconium	Surface	Producer	MRDS
Deer Creek Mine	Gypsum-Anhydrite	Surface	Producer	MRDS
Deer Creek South Pit Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
Delbert Claims #1 & 2	Feldspar, Quartz, Mica, Fluorine-Fluorite		Producer	MRDS
Delbert Claims Nos 102	Feldspar	Surface	Producer	MRDS
Denver Fire Clay	Clay	Surface	Producer	MRDS
Denver Fire Clay Co. Mine	Fire Clay (Refractory)		Producer	MRDS
Doughty Pit	Clay	Surface	Producer	MRDS
Drew Hill Pegnatite No 1	Feldspar	Surface	Producer	MRDS
Dry Creek Pit	Clay	Surface	Producer	MRDS
East Shaffer Hill Pegmatite	Feldspar	Surface	Producer	MRDS
Eldorado Pit	Clay	Surface	Producer	MRDS
Evergreen Meadows	Stone, Crushed/Broken	Surface	Producer	MRDS
Fenders-Magnotta Pegmatite	Feldspar	Surface	Producer	MRDS
Fred Pierce Ranch	Feldspar, Gemstone, Mica, Quartz		Producer	MRDS
Fred Pierce Ranch	Feldspar	Surface	Producer	MRDS
G.h. Buckman Ranch	Quartz, Gemstone, Feldspar, Mica		Producer	MRDS
George W. Parfet Estate, Inc., Prospect	Fire Clay (Refractory)		Producer	MRDS
Gilpin #1	Fluorine-Fluorite		Producer	MRDS
Glencoe Quarries	Stone, Crushed/Broken		Producer	MRDS
Golden Fire Brick Co.	Fire Clay (Refractory)		Producer	MRDS
Golden Fire Brick Co.	Fire Clay (Refractory)		Producer	MRDS
Golden Granite Quarry	Granite		Producer	MRDS
Golden Pit	Clay	Underground	Producer	MRDS
Golden Quarry		Surface	Producer	MRDS
Grapevine Mine	Uranium		Producer	MRDS
Green Mountain Clay Pit	Clay	Surface	Producer	MRDS
Grover Winsor Pegmatite	Niobium (Columbium), Tantalum, REE, Feldspar, Mica, Beryllium		Producer	MRDS
Hard Rock Quarries	Granite		Producer	MRDS
Heberison Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Hiwan Ranch	Feldspar, Mica, Quartz, Garnet, Gemstone		Producer	MRDS
Hiwan Ranch Pegmatite	Feldspar	Surface	Producer	MRDS
Hoffmeister Uranium Prospect	Uranium	Surface	Producer	MRDS
Iowa Gulch Pegmatite	Quartz	Surface	Producer	MRDS
Johnson	Fire Clay (Refractory)		Producer	MRDS
Johnson #2	Fire Clay (Refractory)		Producer	MRDS
Johnson Mine	Clay	Surface	Producer	MRDS
Johnson No 2	Clay	Surface	Producer	MRDS
Judy Ann Claim & Pegmatite	Feldspar	Surface	Producer	MRDS
K.l.green Ranch Pegmatite	Beryllium	Surface	Producer	MRDS
Ladwig	Uranium, Copper		Producer	MRDS
Ladwig Ranch Pegmatite	Feldspar	Surface	Producer	MRDS
Ladwig-Grosso Pegmatite	Feldspar	Surface	Producer	MRDS
Lakewood Plant	Clay	Processing Plant	Producer	MRDS
Landsay Pit	Clay	Surface	Producer	MRDS
Lariat Mine	Clay	Underground	Producer	MRDS
Leyden Pit	Clay	Surface	Producer	MRDS
Lindsay	Fire Clay (Refractory)		Producer	MRDS
Little Abner Pegmatite	Beryllium	Surface	Producer	MRDS
Little Patsy #1 & 2, Fawn #1	Gemstone, Feldspar, Mica, Quartz, Fluorine-Fluorite		Producer	MRDS
Little Patsy Nos 1&2	Feldspar	Surface	Producer	MRDS
Little Quarry	Stone, Crushed/Broken		Producer	MRDS
Lone & Lonesome Lodes Pegmatite	Feldspar	Surface	Producer	MRDS
Luster Lode Claim	Mica, Gemstone, Feldspar, Quartz, Fluorine-Fluorite		Producer	MRDS
Luster Lode Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
M&s Chieftain Mine	Clay		Producer	MRDS
Madlen School Pegmatites	Feldspar	Surface	Producer	MRDS
Madonna No. 1	Quartz	Surface	Producer	MRDS
Mannon Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
McIntyre Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Mica Prospect	Feldspar	Surface	Producer	MRDS
Mica Prospect, Nare Ranch	Feldspar, Mica, Quartz		Producer	MRDS
Mickey No 1	Feldspar	Surface	Producer	MRDS
Morrison Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
New Hedley	Clay	Surface	Producer	MRDS
No Name Pegmatite	Feldspar	Surface	Producer	MRDS
No. 3 & 4 Refractory Clay Mines	Fire Clay (Refractory)		Producer	MRDS
North & South Chieftan	Clay	Surface	Producer	MRDS
North Golden	Fire Clay (Refractory)		Producer	MRDS
North Golden Pit	Clay	Surface	Producer	MRDS
North Rock Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
North Table Mountain	Zeolites	Underground	Producer	MRDS
Old Luster Lode Pegmatite	Feldspar	Surface	Producer	MRDS
Old Soda Creek School Pegmatite	Feldspar	Surface	Producer	MRDS
Orahood Bank	Clay		Producer	MRDS
Oregon #1 & 2 & 3 Claim	Feldspar, Quartz, Mica, Fluorine-Fluorite, Gemstone		Producer	MRDS
Orthite No 1 and Sunset Group	Zirconium	Surface	Producer	MRDS
Osiris Property	Nickel	Surface	Producer	MRDS
Pasty	Feldspar		Producer	MRDS
Pit 2	Sand and Gravel, Construction	Surface	Producer	MRDS
Pit No 22	Sand and Gravel, Construction	Surface	Producer	MRDS
Ralston Buttes District	Uranium		Producer	MRDS
Ramstetter Ranch	Feldspar	Surface	Producer	MRDS
Rock Products No 2	Stone	Surface	Producer	MRDS
Rockwell	Clay	Surface	Producer	MRDS
Rubey H M Rubey Clay Co Mine	Clay	Surface	Producer	MRDS
S B Strang Ralston Creek Pegmatite	Feldspar		Producer	MRDS
Schmidt Constr Inc	Silica	Processing Plant	Producer	MRDS
Seven Hills-Yetter Ranch Pegmatite	Feldspar	Surface	Producer	MRDS
Shepherd Mine	Uranium	Surface	Producer	MRDS
Silver Glen Ranch Pegmatite	Feldspar	Surface	Producer	MRDS
Soda Lakes, Soda Springs	Sodium		Producer	MRDS
South Golden Mine	Fire Clay (Refractory)		Producer	MRDS
Spicer Clay Mine.	Clay	Surface	Producer	MRDS
State Clay Mine	Clay	Surface	Producer	MRDS
Strainland Mine	Fire Clay (Refractory)		Producer	MRDS
Strainland Mine	Clay	Surface	Producer	MRDS
Strainland Pit	Clay	Surface	Producer	MRDS
Stranger Mine	Fire Clay (Refractory)		Producer	MRDS
Sunrise Peak Pegmatite	Beryllium	Surface	Producer	MRDS
Swede-Kerr Gulches Pegmatites	Mica, REE, Feldspar		Producer	MRDS
Swede-Kerr Gulches Pegmatites	Feldspar	Surface	Producer	MRDS
Tall Timber No 1	Feldspar	Surface	Producer	MRDS
Tall Timber No 2	Feldspar	Surface	Producer	MRDS
Tall Timber No 3 Pegmatite	Feldspar	Surface	Producer	MRDS
Teagarden Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Terra Cotta	Fire Clay (Refractory)		Producer	MRDS
Th Avenue Croshing Plant	Sand and Gravel, Construction	Surface	Producer	MRDS
Thomas-Union Lodes	Quartz, Feldspar, Mica, Garnet, Gemstone		Producer	MRDS
Thomas-Union Lodes Pegmatite	Mica	Surface	Producer	MRDS
Tincup Mine	Clay	Underground	Producer	MRDS
Unknown	Granite		Producer	MRDS
Unknown	Fire Clay (Refractory)		Producer	MRDS
Unknown	Clay		Producer	MRDS
Unknown	Stone, Crushed/Broken		Producer	MRDS
Unknown	Fire Clay (Refractory)		Producer	MRDS
Unknown	Fire Clay (Refractory)		Producer	MRDS
Unknown	Fire Clay (Refractory)		Producer	MRDS
Unknown	Stone, Crushed/Broken		Producer	MRDS
Unknown	Fire Clay (Refractory)		Producer	MRDS
Unknown	Fire Clay (Refractory)		Producer	MRDS
Unknown	Fire Clay (Refractory)		Producer	MRDS
Unknown	Stone, Crushed/Broken		Producer	MRDS
Unknown	Granite		Producer	MRDS
Unknown	Fire Clay (Refractory)		Producer	MRDS
Unknown	Stone, Dimension		Producer	MRDS
Unknown	Fire Clay (Refractory)		Producer	MRDS
Unknown	Fire Clay (Refractory)		Producer	MRDS
Unknown	Limestone, General		Producer	MRDS
Unknown	Fire Clay (Refractory)		Producer	MRDS
Unknown	Fire Clay (Refractory)		Producer	MRDS
Unknown	Fire Clay (Refractory)		Producer	MRDS
Unknown	Limestone, General		Producer	MRDS
Unknown	Fluorine-Fluorite	Underground	Producer	MRDS
Unknown	Copper	Surface	Producer	MRDS
Unknown	Feldspar	Surface	Producer	MRDS
Unknown	Clay	Surface	Producer	MRDS
Unknown	Gypsum-Anhydrite	Surface	Producer	MRDS
Unknown	Feldspar	Surface	Producer	MRDS
Vergie #2	Feldspar		Producer	MRDS
Wasson Beryl Deposit	Beryllium	Surface	Producer	MRDS
Wasson Ranch Pegmatite	Feldspar	Surface	Producer	MRDS
Waterton Pit	Clay	Surface	Producer	MRDS
West Lake Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
White Cap Quarry	Stone	Surface	Producer	MRDS
White Cloud Pegmatite	Fluorine-Fluorite	Surface	Producer	MRDS
Wilson	Fire Clay (Refractory)		Producer	MRDS
Wilson Clay Mine	Clay	Surface	Producer	MRDS
Youngfield Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Youngfield Plant	Sand and Gravel, Construction	Processing Plant	Producer	MRDS
3dw Mines	Fire Clay	Surface	Abandoned	MSHA
Alumet Pilot Plant	Aluminum	Processing Plant	Unknown	MRDS
Ascension Mine		Underground	Past Producer	MRDS
Aubrey Ladwig Mine		Surface-Underground	Past Producer	MRDS
Aubrey-Ladwig Mine	Uranium		Past Producer	MRDS
Augusta Mine	Copper, Silver, Fluorine-Fluorite		Past Producer	MRDS
Bankers Lode Claim	Copper, Uranium		Occurrence	MRDS
Beryl Ores Mill	Beryllium	Surface	Past Producer	MRDS
Big Bear No. 2 Mine	Feldspar, REE		Past Producer	MRDS
Big Bertha Mine	Quartz, Feldspar		Past Producer	MRDS
Big Bertha Pegmatite	Feldspar	Surface	Past Producer	MRDS
Bigger Mica Mine	Feldspar, Mica, Beryllium		Past Producer	MRDS
Bigger Mica Mine	Feldspar	Surface	Past Producer	MRDS
Billiken and Black Knight Lodes	Uranium, Copper		Occurrence	MRDS
Black Forest Mine	Crushed, Broken Stone NEC	Underground	Abandoned	MSHA
Blackstone Claim	Uranium		Prospect	MRDS
Bonzo No. 1 Claim	Uranium, Copper		Occurrence	MRDS
Brannan Pit 26	Sand and Gravel, Construction	Surface	Unknown	MRDS
Buckman Property	Uranium, Copper		Occurrence	MRDS
Buckman Ranch Pegmatite	Iron, Beryllium, Gemstone, Quartz, Garnet, Mica, Feldspar		Occurrence	MRDS
Buffalo Mine	Lead, Gold, Silver, Fluorine-Fluorite		Past Producer	MRDS
Burroughs Feldspar Mine	Feldspar, Beryllium, Mica		Past Producer	MRDS
Burroughs Feldspar Mine	Feldspar	Surface	Past Producer	MRDS
Butterfield Mine	REE, Niobium (Columbium), Tantalum		Past Producer	MRDS
Capitol Central	Lead	Surface	Unknown	MRDS
Capitol Central Mine	Lead, Zinc, Silver, Gold		Occurrence	MRDS
Catherine #1 Claim	Mica, Fluorine-Fluorite, Gemstone, Feldspar, Quartz		Occurrence	MRDS
Cervi Lease	Uranium		Occurrence	MRDS
Cervi Lease		Underground	Past Producer	MRDS
Chieftan Mine	Clay		Occurrence	MRDS
Clear Creek Sand & Gravel Gold Dep	Sand and Gravel, Construction	Placer	Occurrence	MRDS
Cook Property	Copper, Lead, Zinc		Occurrence	MRDS
Coon Gulch Clay Pits	Clay		Occurrence	MRDS
Cooper Quarry	Quartz, Feldspar		Past Producer	MRDS
Coors Pegmatite	Feldspar, Mica		Past Producer	MRDS
Cressmans Gulch	Feldspar	Surface	Past Producer	MRDS
Cressmans Gulch Prospect	Feldspar, Beryllium		Past Producer	MRDS
Dazie Bell Mine	Quartz		Past Producer	MRDS
Deer Creek Plant	Crushed, Broken Stone NEC	Surface	Abandoned	MSHA
Denver Fire Clay Co.	Fire Clay (Refractory)		Occurrence	MRDS
Denver Plant 60 Clay Mines	Clay, Ceramic, Refractory Mnls.	Surface	Temporarily Idled	MSHA
Dog Pound Pit	Sand and Gravel, Construction	Surface	Unknown	MRDS
Drew Hill Prospect	Beryllium		Occurrence	MRDS
East Shaffer Hill Pegmatite	Feldspar		Past Producer	MRDS
Elledge	Beryllium		Occurrence	MRDS
Elledge Beryl Prospect	Beryllium		Occurrence	MRDS
Evergreen Florite Deposit	Fluorine-Fluorite		Past Producer	MRDS
F. M. D. Mine	Copper	Surface-Underground	Past Producer	MRDS
Fenders-Magnotte Peg	Feldspar, Mica, Quartz, Garnet, Gemstone		Occurrence	MRDS
Fire Clay #4	Fire Clay (Refractory)		Occurrence	MRDS
Foothill	Uranium	Underground	Unknown	MRDS
Foothills	Gold	Underground	Past Producer	MRDS
Fork Prospect			Prospect	MRDS
Four Corners Mine	Uranium		Past Producer	MRDS
Gemini Mine	Quartz		Past Producer	MRDS
Genessee Mountain Scheelite Occurrence			Occurrence	MRDS
Golden Clay Mines	Fire Clay (Refractory)		Occurrence	MRDS
Grapevine Mine		Underground	Past Producer	MRDS
Grosso		Surface-Underground	Prospect	MRDS
Hosa Lodge Mine	Copper, Lead, Zinc		Occurrence	MRDS
Idealite Mine	Clay	Surface	Past Producer	MRDS
Idledale District	Uranium		Past Producer	MRDS
Iowa Gulch	Quartz, Feldspar, Mica, Gemstone, Garnet, Iron		Occurrence	MRDS
Jackass	Fire Clay (Refractory)		Occurrence	MRDS
Janet Lucritia Mine	Quartz		Past Producer	MRDS
Jefferson County Iron Mines	Iron		Occurrence	MRDS
Judy Ann Mine	Quartz, Mica, Feldspar		Occurrence	MRDS
Kennedy Gulch Magnetite Deposit	Iron		Occurrence	MRDS
Ladwig # 2	Uranium	Underground	Past Producer	MRDS
Ladwig Group	Uranium		Occurrence	MRDS
Ladwig Properties		Underground	Past Producer	MRDS
Ladwig-Grosso Pegmatite	Beryllium, Mica		Past Producer	MRDS
Linda 1&2 Mine	Gold	Surface	Occurrence	MRDS
Little Abner Pegmatite	Beryllium, REE, Feldspar		Past Producer	MRDS
Little Patsy Mine	Feldspar, Quartz		Past Producer	MRDS
Little Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Luster No. 1 Mine	Feldspar, Fluorine-Fluorite		Past Producer	MRDS
Luster No. 1 Quarries	Feldspar	Surface	Unknown	MRDS
McIntyre Pit	Construction Sand and Gravel	Surface	Abandoned	MSHA
Madonna No. 2	Quartz, Feldspar	Surface	Past Producer	MRDS
Madonna No. 3	REE, Quartz, Feldspar		Past Producer	MRDS
Malachite Mine	Gold, Copper, Silver		Past Producer	MRDS
Malden School Peg	Feldspar, Quartz, Garnet, Mica		Occurrence	MRDS
Mann Mine No. 1	Uranium		Occurrence	MRDS
Mann Ranch	Uranium		Past Producer	MRDS
Mann Ranch		Underground	Past Producer	MRDS
Mena Mine	Uranium	Underground	Past Producer	MRDS
Mickey #1	Gemstone, Fluorine-Fluorite, Mica, Quartz, Feldspar		Occurrence	MRDS
North Star Mine	Copper		Past Producer	MRDS
North Star Mine		Underground	Past Producer	MRDS
Northern Portable Plant #11	Construction Sand and Gravel	Surface	Abandoned	MSHA
Ohman Mine	Uranium		Past Producer	MRDS
Ohman Mine		Underground	Past Producer	MRDS
Old Leyden	Uranium, Graphite		Occurrence	MRDS
Old Leyden Coal Mine		Underground	Past Producer	MRDS
Old Leyden Mine	Coal, Uranium		Past Producer	MRDS
Old Soda Creek School Pegmatite	Feldspar		Past Producer	MRDS
Oregon No 1 Claim Pegmatite	Feldspar, Quartz	Surface	Unknown	MRDS
Oregon No 1-1/2 Quarry	Quartz	Surface	Unknown	MRDS
Oregon No. 1 Mine	Quartz		Past Producer	MRDS
Oregon No. 2 Quarry	Feldspar	Surface	Unknown	MRDS
Oregon No. 2-1/2 Quarry	Feldspar	Surface	Unknown	MRDS
Oregon No. 3 Mine	Quartz		Past Producer	MRDS
Orthite #1 & Sunset Groups	REE, Zirconium		Occurrence	MRDS
Osirio Mine	Nickel		Occurrence	MRDS
Osirio Mine	Nickel	Underground	Past Producer	MRDS
Powerscreen Chieftain	Construction Sand and Gravel	Surface	Abandoned	MSHA
Pallaro Lease	Uranium		Occurrence	MRDS
Pallaro Lease		Underground	Past Producer	MRDS
Parfet Clay Pits	Clay		Occurrence	MRDS
Platt Canyon	Uranium	Underground	Past Producer	MRDS
Portable Crusher #2	Construction Sand and Gravel	Surface	Abandoned	MSHA
Qualla and Young Sampson Lodes	Copper, Zinc, Silver, Lead		Occurrence	MRDS
Quarry		Surface	Unknown	MRDS
Quatman Lease	Uranium		Past Producer	MRDS
R. Gilman Ranch Pegmatite	Mica, Feldspar		Occurrence	MRDS
Raleigh Park Mine	Feldspar	Surface	Past Producer	MRDS
Ralston	Sand and Gravel, Construction	Surface	Unknown	MRDS
Ramstetter Ranch Prospect	Beryllium		Occurrence	MRDS
Rio Grande Pit	Sand and Gravel, Construction		Past Producer	MRDS
Robinson Gulch	Feldspar	Surface	Occurrence	MRDS
Robinson Gulch Prospect	Beryllium, Mica, Feldspar		Occurrence	MRDS
Rocky Flats Facility	Gold Ore	Facility	Abandoned	MSHA
Rocky Flats Pit	Clay	Surface	Past Producer	MRDS
Roscoe Beryl Prospect	Mica, Feldspar	Surface	Past Producer	MRDS
Roscoe Gulch Pegmatites	Beryllium, Mica, Feldspar	Surface	Past Producer	MRDS
Schwartzwalder	Uranium-Vanadium Ore	Underground	Abandoned	MSHA
Schwartzwalder Mine	Uranium	Underground	Past Producer	MRDS
Sec 36 T2s R71w N 1/2			Prospect	MRDS
Sec.35 T3s R71w			Prospect	MRDS
Seven Hills-Yetter Ranch Pegmatite	Feldspar, Mica, Quartz, Garnet, Gemstone		Occurrence	MRDS
Shaffers Crossing Quarry	Crushed, Broken Stone NEC	Surface	Abandoned	MSHA
Shuttle Run Mine	Feldspar, Quartz		Past Producer	MRDS
Silver Glen Ranch Pegmatite	Mica, Feldspar		Past Producer	MRDS
South Platte Pegmatite District	Feldspar, Quartz		Past Producer	MRDS
Stone Placer Mine	Uranium		Past Producer	MRDS
Strang Pegmatite	Quartz, Feldspar, Mica		Occurrence	MRDS
Sunrise Peak Mine	Quartz	Underground	Past Producer	MRDS
Sunrise Peak Pegmatite	Niobium (Columbium), Tantalum, REE, Feldspar		Past Producer	MRDS
Susy Belle	Feldspar, Mica, Quartz, Fluorine-Fluorite, Gemstone		Occurrence	MRDS
Susy Belle Claim & Pegmatites	Feldspar		Occurrence	MRDS
Swadley Placers	Gold		Past Producer	MRDS
Tall Timber Group	Mica, Beryllium, Feldspar		Past Producer	MRDS
Union Mica Lode	Gold	Underground	Past Producer	MRDS
Union Pacific Shaft	Uranium, Copper		Occurrence	MRDS
Union Pacific Shaft		Underground	Prospect	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	REE		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Mica		Occurrence	MRDS
Unknown	Mica		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Fluorine-Fluorite		Occurrence	MRDS
Unknown	Fluorine-Fluorite		Occurrence	MRDS
Unknown	Feldspar, Mica, Quartz		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Limestone, General		Occurrence	MRDS
Unknown	Stone, Dimension		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Silica		Occurrence	MRDS
Unknown	Dolomite		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Gypsum-Anhydrite		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Stone, Dimension		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Sand and Gravel, Construction		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Fire Clay (Refractory)		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Clay		Occurrence	MRDS
Unknown	Quartz	Surface	Occurrence	MRDS
Unknown	Stone	Surface	Unknown	MRDS
Unknown	Stone, Crushed/Broken	Surface	Unknown	MRDS
Unknown	Mica	Surface	Unknown	MRDS
Unknown	Feldspar, Quartz	Surface	Occurrence	MRDS
Unknown	Stone	Surface	Unknown	MRDS
Unnamed Cu Prospect	Copper		Occurrence	MRDS
Unnamed Cu Prospect	Copper		Occurrence	MRDS
Unnamed Fe Mine	Iron		Past Producer	MRDS
Unnamed Mine	Lead		Occurrence	MRDS
Unnamed Mo Prospect	Molybdenum		Occurrence	MRDS
Unnamed Placer	Gold		Past Producer	MRDS
Unnamed Placer	Gold		Past Producer	MRDS
Unnamed Placers	Gold		Past Producer	MRDS
Unnamed Silver Occurrence			Occurrence	MRDS
Unnamed W Prospect	Tungsten		Occurrence	MRDS
Wp 3	Construction Sand and Gravel	Surface	Intermittent	MSHA
Wasson Pegmatite	Beryllium, Feldspar, Mica		Past Producer	MRDS
White Cloud	Tantalum, Niobium (Columbium), REE		Occurrence	MRDS
White Cloud Mine	Feldspar, Quartz		Past Producer	MRDS
Wright Lease	Uranium		Past Producer	MRDS
Wright Lease		Underground	Past Producer	MRDS
Yammy Yogurt Mine	Quartz		Past Producer	MRDS
Youngfield Pit	Sand and Gravel, Construction		Past Producer	MRDS