| CONREY PEACER MINING CO | ADLER | MT |
| ANACONDA CO | ANACONDA | MT |
| ANACONDA COPPER MINING CO. | ANACONDA | MT |
| ANACONDA COPPER MINING CO. WAREHOUSE | ANACONDA | MT |
| ANACONDA COPPER MINING COMPANY | ANACONDA | MT |
| Saltenberger Plumbing & Heating | Anaconda | MT |
| SULPHURIC ACID PLANT | ANACONDA | MT |
| The Anaconda Co. | Anaconda | MT |
| Anaconda Copper Co. | Anaconda | MT |
| Armstrong Contracting & Supply Corporation | Billings | MT |
| BILLINGS LAUNDRY | BILLINGS | MT |
| BILLINGS MUTUAL HEATING CO. | BILLINGS | MT |
| BILLINGS SUGAR CO | BILLINGS | MT |
| BILLINGS UTILITY CO. | BILLINGS | MT |
| Carter Oil | Billings | MT |
| CARTER OIL CO | BILLINGS | MT |
| Carter Oil Co (aka Exxon Refinery) | Billings | MT |
| CARTER OIL CO. | BILLINGS | MT |
| Carter Oil Company | Billings | MT |
| Conoco Oil Refinery | Billings | MT |
| CONTINENTAL OIL COMPANY | BILLINGS | MT |
| E J BARTELLS CO | BILLINGS | MT |
| E.J. BARTELLS | BILLINGS | MT |
| Exxon Corporation | Billings | MT |
| Exxon Refinery | Billings | MT |
| FIBERGLAS ENGINEERING & SUPPLY CO. | BILLINGS | MT |
| GREAT WESTERN SUGAR CO | BILLINGS | MT |
| HUMBLE OIL | BILLINGS | MT |
| HUMBLE OIL & REFINERY | BILLINGS | MT |
| HUMBLE OIL & REFINING CO | BILLINGS | MT |
| HUMBLE OIL CO | BILLINGS | MT |
| MONTANA POWER | BILLINGS | MT |
| MONTANA POWER CO – BILLINGS PLANT UNIT #2 | BILLINGS | MT |
| Montana Power Company | Billings | MT |
| MONTANA POWER COMPANY | BILLINGS | MT |
| MONTANA POWER COMPANY – J.E. CORETTE STATION | BILLINGS | MT |
| Mountain Bell | Billings | MT |
| POWERHOUSE | BILLINGS | MT |
| ST. VINCENTS HOSPITAL | BILLINGS | MT |
| TED HALL | BILLINGS | MT |
| Wyo-Ben Prod Co Material Supply Division | Billings | MT |
| Yale Oil Corporation | Billings | MT |
| Humble Refindery | Billings | MT |
| P.B. MOSS | BILLINGS, | MT |
| Conoco Oil Company | BILLINGS, | MT |
| Continental Oil Co. | BILLINGS, | MT |
| Owens Corning Fiberglass Corp. | BILLINGS, | MT |
| ANACONDA COPPER MINING CO. | BLACK EAGLE | MT |
| BOSTON AND MONTANA CONSOLIDATED. COPPER AND SILVER MINING CO. | BLACK EAGLE | MT |
| BOSTON AND MONTANA REDUCTION DEPARTMENT. | BLACK EAGLE | MT |
| COPPER AND SILVER MINING CO | BLACK EAGLE | MT |
| BOSTON AND MONTANA CONSOLIDATED. COPPER AND SILVER MINING CO. | BLACK EAGLE FALLS | MT |
| BOZEMAN MONTANA COLLEGE | BOZEMAN | MT |
| STATE COLLEGE OF AGRICULTURAL AND MECHANICAL. ARTS. | BOZEMAN | MT |
| ANACONDA COMPANY | BUTTE | MT |
| ANACONDA COMPANY | BUTTE | MT |
| ANACONDA COMPANY – GREEN LEACH BUILDING | BUTTE | MT |
| ANACONDA COMPANY – GREEN LEACH BUILDING | BUTTE | MT |
| ANACONDA COPPER MINING CO. | BUTTE | MT |
| ANACONDA COPPER MINING COMPANY | BUTTE | MT |
| Armstrong Contracting & Supply Corporation | Butte | MT |
| BUTTE GENERAL ELECTRIC CO. | BUTTE | MT |
| BUTTE LIGHTING AND POWER CO | BUTTE | MT |
| CONSOLIDATED COPPER AND SILVER MINING CO | BUTTE | MT |
| EAST BUTTE COPPER MINING CO. | BUTTE | MT |
| HEARTLAND GRAIN FUELS | BUTTE | MT |
| KELLY HEATING PLANT | BUTTE | MT |
| MONTANA ORE PURCHASING CO. | BUTTE | MT |
| MONTANA POWER CO. | BUTTE | MT |
| NO BUTTE MINING CO | BUTTE | MT |
| ORIGINAL BUTTE MINING CO. | BUTTE | MT |
| PHOENIX ELECTRIC CO. | BUTTE | MT |
| PHOENIX ELECTRIC PLANT | BUTTE | MT |
| PITTSBURG AND MONTANA COPPER CO | BUTTE | MT |
| STAUFFER CHEMICAL | BUTTE | MT |
| TIMBER BUTTE MILLING CO. | BUTTE | MT |
| VICTOR CHEMICAL COMPANY | BUTTE | MT |
| MOULTON GOLD AND SILVER MINING CO | BUTTE CITY | MT |
| MOULTON MINING CO. | BUTTE CITY | MT |
| NORTHWESTERN IMPROVEMENT CO. | CHESTNUT | MT |
| UTAH IDAHO SUGAR CO | CHINOOK | MT |
| LEGAL TENDER MINING CO. | CLANCY | MT |
| MONTANA POWER & LIGHT CO | COLSTRIP | MT |
| Montana Power Company | Colstrip | MT |
| ANACONDA ALUMINUM CO | COLUMBIA FALLS | MT |
| ANACONDA ALUMINUM CO – Combustion EngineeringNTRAL HEATING PLANT | COLUMBIA FALLS | MT |
| ANACONDA ALUMINUM CO ALUMINUM DIV | COLUMBIA FALLS | MT |
| PLUM CREEK LUMBER CO | COLUMBIA FALLS | MT |
| PLUM CREEK LUMBER COMPANY | COLUMBIA FALLS | MT |
| PLUM CREEK LUMBER COMPANY | COLUMBIA FALLS | MT |
| ANACONDA ALUMINUM CO | CONKELLEY | MT |
| BROEDER LUMBER COMPANY | CRESTON | MT |
| BROEDER LUMBER COMPANY | CRESTON | MT |
| GPI | Cut Bank | MT |
| UNION OIL CO | CUT BANK | MT |
| CHICAGO, MILWAUKEE, ST PAUL & PACIFIC RAILROAD | DEER LODGE | MT |
| AMERICAN SMELTING & REFIN | E HELENA | MT |
| American Smelting & Refining | East Helena | MT |
| Asarco Inc | East Helena | MT |
| FORSYTH ELECT LIGHT POWER CO | FORSYTH | MT |
| Stone Container Corporation/Paper Mill | Frenchtown | MT |
| GEISMAR INDUSTRIES INC | GEISMAR | MT |
| AIRBASE POWERHOUSE | GLASGOW | MT |
| GLASGOW AIR FORCE BASE – SQUADRON HEADQUARTERS & THEATER | GLASGOW | MT |
| GLENDIVE HT. LIGHT AND POWER CO. | GLENDIVE | MT |
| MONTANA-DAKOTA UTILITIES CO. | GLENDIVE | MT |
| NORTHERN PACIFIC RAILROAD CO | GLENDIVE | MT |
| BOSTON AND MONTANA CON. COPPER AND SILVER MING CO. | GREAT FALLS | MT |
| BOSTON MONTANA CONSOLIDATED. COPPER AND SILVER MINING CO. | GREAT FALLS | MT |
| COPPER AND SILVER MINING CO | GREAT FALLS | MT |
| Forzley Sales Co | Great Falls | MT |
| GENERAL MILLS – FLOUR DIVISION | GREAT FALLS | MT |
| PHILLIPS PETROLEUM | GREAT FALLS | MT |
| PHILLIPS PETROLEUM CO. | GREAT FALLS | MT |
| PHILLIPS PETROLEUM COMPANY – GREAT FALLS REFINERY | GREAT FALLS | MT |
| PHILLIPS PETROLEUM COMPANY – GREAT FALLS REFINERY – WAREHOUSE NBR 2 | GREAT FALLS | MT |
| PHILLIPS PETROLEUM COMPANY – REFINING DEPARTMENT – WAREHOUSE #2 | GREAT FALLS | MT |
| UNITED STATES ARMY AIR BASE | GREAT FALLS | MT |
| UNITED STATES GYPSUM CO | HEATH | MT |
| HELENA POWER TRANSMISSION CO. | HELENA | MT |
| HELENA TRANSMISSION CO | HELENA | MT |
| NATIONAL MINING AND EXPLORING CO | HELENA | MT |
| BRICK & BUILDERS SUPPLY | KALISPELL | MT |
| C AND C PLYWOOD CORP | KALISPELL | MT |
| BRICK & BUILDERS SUPPLY | KALTSPELL | MT |
| Canex Oil Refinery | Laurel | MT |
| CENEX REFINERY | LAUREL | MT |
| CENEX, INC. | LAUREL | MT |
| FARMERS UNION CENTRAL | LAUREL | MT |
| FARMERS UNION CENTRAL EXCHANGE | LAUREL | MT |
| FARMERS UNION Combustion EngineeringNTRAL EXCHANGE | LAUREL | MT |
| FUCE PLANT | LAUREL | MT |
| LAUREL OIL AND REFINING CO | LAUREL | MT |
| UNION TANK CAR CO | LAUREL | MT |
| Cenex Refinery | LAUREL | MT |
| Ej Bartells | LEWISTON | MT |
| Lewiston Brick & Tile | LEWISTON | MT |
| J NEIL LUMBER COMPANY | LIBBY | MT |
| J. NEILS LUMBER CO | LIBBY | MT |
| SAINT REGIS PAPER COMPANY | LIBBY | MT |
| SAINT REGIS PAPER COMPANY | LIBBY | MT |
| ST REGIS PAPER CO | LIBBY | MT |
| NORTHERN PACIFIC RAILROAD CO | LIVINGSTON | MT |
| NORTHERN PACIFIC RAILWAY CO | LIVINGSTONE | MT |
| WATER AND ELECTRIC LIGHT CO | MILES CITY | MT |
| AMALGAMATED SUGAR CO. | MISSOULA | MT |
| AMERICAN CRYSTAL SUGAR CO. | MISSOULA | MT |
| Armstrong Contracting & Supply Corporation | Missoula | MT |
| Clausen Refrigeration | Missoula | MT |
| EVANS PRODUCTS CO | MISSOULA | MT |
| GREAT WESTERN SUGAR CO. | MISSOULA | MT |
| HOERNER WALDORF | MISSOULA | MT |
| HOERNER WALDORF CORP. | MISSOULA | MT |
| HOERNER WALDORF CORPORATION – HOT PROCESS SOFTENER TANK | MISSOULA | MT |
| HOERNER WALDORF CORPORATION – HOT PROCESS SOFTENER TANK | MISSOULA | MT |
| HOERNER WALDORF PAPER PRODUCTS | MISSOULA | MT |
| INTERMOUNTAIN LUMBER CO | MISSOULA | MT |
| IOWA VALLEY SUGAR CO. INC. | MISSOULA | MT |
| MISSOULA LIGHT AND WATER CO | MISSOULA | MT |
| MISSOULA WHITE PINE SASH | MISSOULA | MT |
| MONTANA STATE UNIVERSITY | MISSOULA | MT |
| MONTANA STATE UNIVERSITY | MISSOULA | MT |
| MONTANA UNIVERSITY OF | MISSOULA | MT |
| NEW MENS RESIDENCE | MISSOULA | MT |
| PAPER MILL & DIGESTER | MISSOULA | MT |
| SMURFIT STONE CONTAINER | MISSOULA | MT |
| SMURFIT/STONE CONTAINER CORP. | MISSOULA | MT |
| Stone Container | Missoula | MT |
| STONE CONTAINER | MISSOULA | MT |
| Stone Container Corporation/Paper Mill | Missoula | MT |
| UNIVERSITY CENTER | MISSOULA | MT |
| UNIVERSITY OF MONTANA | MISSOULA | MT |
| UNIVERSITY OF MONTANA | MISSOULA | MT |
| VAN EVAN CO | MISSOULA | MT |
| WALDORF HOERNER PAPER PRODUCTS CO | MISSOULA | MT |
| WALDORF PAPER COMPANY | MISSOULA | MT |
| WALDORF PAPER PRODUCTS CO | MISSOULA | MT |
| WALDORF-HARNER PAPER | MISSOULA | MT |
| Anaconda Copper | MONTANA | MT |
| Kaiser Cement & Gypsum | Montana City | MT |
| NORTHERN PACIFIC RAILWAY CO | MULLAN TUNNEL | MT |
| UNION OIL COMPANY | OUT BANK | MT |
| GRANITE BI METALIC CONS MG. CO. | PHILIPSBURG | MT |
| DIEHL LUMBER CO | PLAINS | MT |
| CASCADES PLYWOOD CO | POLSON | MT |
| DUPOIS LUMBER CO | POLSON | MT |
| DUPIUS LUMBER DIV PACK RI | PULSON | MT |
| NORTHWESTERN IMPROVEMENT CO. | RED LODGE | MT |
| HOLLY SUGAR CORPORATION | SIDNEY | MT |
| MIDLAND SUGAR CO | SIDNEY | MT |
| MONTANA DAKOTA UTILITIES CO. | SIDNEY | MT |
| MONTANA DAKOTA UTILITIES CO. – LEWIS AND CLARK STATION | SIDNEY | MT |
| Montana-Dakota Utilities | Sidney | MT |
| POWERHOUSE | SIDNEY | MT |
| SIDNEY MONTANA POWERHOUSE | SIDNEY | MT |
| STAUFFER CHEMICAL | SILVER BOW | MT |
| STAUFFER CHEMICAL CO | SILVER BOW | MT |
| ANACONDA COPPER MING CO | SILVER LAKE | MT |
| TEXACO, INC. | SUNBURST | MT |
| PACK RIVER LUMBER CO | THOMPSON FALLS | MT |
| CYPRUS INDUSTRIAL MINERALS CO. | THREE FORKS | MT |
| SIERRA TALC AND CLAY CO INC | THREE FORKS | MT |
| UNITED SIERRA DIV CYPRUS MINES CORP | THREE FORKS | MT |
| J. NEILS LUMBER CO | TROY | MT |
| Montana Light & Power Company | TROY | MT |
| MONTANA STATE HOSPITAL | WARM SPRINGS | MT |
| WARM SPRINGS STATE HOSPITAL | WARM SPRINGS | MT |
| MONTANA COAL AND IRON CO. | WASHOE | MT |
| AMALGAMATED SUGAR CO. | WHITEHALL | MT |
| ALTA MONTANA CO. | WICKS | MT |
| CARTER OIL CO–BILLINGS, MT (C.C. Moore & Co. Engineers) | MT |
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