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United States Bureau of Mines - Reports of Investigation 5301 - 6800 (part 3)


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 To search this whole page, use your browser.  Go to edit, search, type in the word(s) you are looking for and press enter.
Links to other RI sections:
USBM Reports of Investigation 1 (RI 2300 - 3800)

USBM Reports of Investigation 2 (RI 3801 - 5300)

USBM Reports of Investigation 4 (RI 6801 - 8300)

USBM Reports of Investigation 5 (RI 8301 - 9700)



 Reports of Investigation 5301 - 6800 (part 3) listed here
RI 5312 / BENEFICIATION OF IRON-COPPER ORES FROM KASAAN PENINSULA, PRINCE OF WALES ISLAND, ALASKA, $ 9

RI 5313 / EXAMINATION OF COPPER-LEAD-ZINC DEPOSITS, CABARRUS AND UNION COUNTIES, NORTH CAROLINA, $ 20

RI 5315 / ELECTROREFINING TITANIUM METAL, $ 8

 RI 5319 / INVESTIGATION OF PIKES PEAK IRON DEPOSITS, MARICOPA COUNTY, ARIZONA, $ 12

RI 5320 / COPPER MINES AND PROSPECTS ADJACENT TO LANDLOCKED BAY, PRINCE WILLIAM SOUND, ALASKA, $ 10
RI 5322 / ELECTROWINNING CHROMIUM METAL, $ 8
RI 5323 / PERCOLATION LEACHING OF MANGANESE ORES WITH SULFUR DIOXIDE, $ 7
RI 5324 / FLOTATION OF IRON SULFIDES FROM ZINC TAILINGS OF SOUTHWESTERN WISCONSIN LEAD-ZINC DISTRICT, $ 15

RI 5328 / A FIELD TEST FOR SELENIUM, $ 4

RI 5330 / PILOT-PLANT FLOTATION OF MANGANESE ORE FROM THE MAGGIE CANYON DEPOSIT, ARTILLERY MOUNTAINS REGION, MOHAVE COUNTY, ARIZONA, $ 45

RI 5336 / GEOLOGIC FACTORS RELATED TO BLOCK CAVING AT SAN MANUEL COPPER MINE, PINAL COUNTY, $ 28
RI 5339 / PROGRESS REPORT ON PEGMATITE INVESTIGATIONS IN SOUTH DAKOTA FOR FISCAL YEARS 1954-56, $ 25

RI 5341 / CAUSTIC LEACHING OF MANGANESE FLOATATION CONCENTRATE FROM ARTILLERY PEAK, ARIZONA, $ 10
RI 5342 / LEACH-PRECIPITATION-FLOTATION TESTS OF A CALIFORNIA COPPER-GOLD ORE, CALIFORNIA, $ 8

RI 5343 / THE MINERS QUEEN COPPER DEPOSIT, pb, 16 pages, 6 figs., $ 10

RI 5344 / INVESTIGATION OF FLUORSPAR DEPOSIT, KAISER MINE, MINERAL COUNTY, NEVADA, $ 18
RI 5348 / ROOF-SPAN STUDIES IN LIMESTONE, $ 12

RI 5362 / IOWA COALS AS A SOURCE OF SULFUR, $ 12

RI 5366 / LABORATORY INVESTIGATION OF BAUXITE ORE FROM THE QUAPAW DEPOSIT, SALINE COUNTY, ARKANSAS, $ 10

RI 5369 / MANGANESE DEPOSITS OF SOUTHWESTERN OREGON, $ 28

RI 5372 / DETERMINATION OF THE AVERAGE EFFECTIVE VALENCE STATE OF TITANIUM IN SODIUM CHLORIDE, $ 5

RI 5379 / CLAY MINERALS AND PERMEABILITY OF APPALACHIAN OIL SANDS, $ 24
RI 5381 / REMOVING AND RECOVERING FLUORINE FROM WESTERN PHOSPHATE ROCK AND UTILIZING THE DEFLUORINATED ROCK, $ 10
RI 5390 / RADIOMETRIC DETERMINATION OF URANIUM IN ORES, $ 7
RI 5392 / INVESTIGATION OF MANGANESE AREAS, HAMMOND PLANTATION AND HODGDON TOWNSHIPS, SOUTHERN DISTRICT, AROOSTOOK COUNTY, MAINE, $ 36

 RI 5395 / ILMENITE AND OTHER BLACK-SAND MINERALS IN THE GOLD FORK PLACER DEPOSIT, VALLEY COUNTY, IDAHO, $ 10

RI 5396 / IMENITE AND OTHER BLACK SAND MINERALS IN THE DEADWOOD PLACER DEPOSIT, VALLEY COUNTY, IDAHO, $ 6
RI 5504 / PETROGRAPHIC EXAMINATION AND CHEMICAL ANALYSIS FOR SEVERAL FOREIGN OIL SHALES, $ 20
RI 5407 / SPECTROGRAPHIC DETERMINATION OF BERYLLIUM IN A VARIABLE MATRIX, $ 4
RI 5408 / STRENGTH OF STEEL ROOF BOLTS AFTER REPEATED BENDING, $ 18

RI 5411 / MANGANESE RESOURCES OF THE BATESVILLE DISTRICT, ARKANSAS, PART 2 OF 3, $ 25
RI 5417 / SYNTHETIC ASBESTOS INVESTIGATIONS:  SYNTHESIS OF FLUORAMPHIBOLES FROM MELTS, $ 9
RI 5425 / CLAY IN PETROLEUM RESERVOIR ROCKS: IT’S AFFECT ON PERMEABILITY, WITH PARTICULAR REFERENCE TO TEJONE-GRAPEVINE AREA, KERN COUNTY, CALIFORNIA, $ 38

 RI 5426 / PRACTICAL EVALUATION OF ELECTRICAL RESISTIVITY SURVEYS AS A GUIDE TO ZINC-LEAD EXPLORATORY DRILLING, BADGER-PEACOCK CAMP AND VICINITY, CHEROKEE COUNTY, KANSAS, $ 85
RI 5433 / RECOVERING MERCURY FROM CINNABAR-STIBNITE ORE BY FLOTATION AND FLUIDIZED-BED ROASTING, $ 5
RI 5446 / RECONNAISSANCE OF NEVADA MANGANESE DEPOSITS, $ 25
RI 5449 / EXPERIMENTS IN REDUCING THE PHOSPHORUS CONTENT OF A NEVADA IRON ORE, $ 3
RI 5462 / OPERATIONS OF MANGANESE-ORE-PURCHASING DEPOTS AT DEMING, NEW MEXICO AND WENDEN, ARIZONA, $ 20
RI 5472 / MANGANESE DEPOSITS OF NORTHEASTERN OREGON, $ 24

RI 5480 / JOHN BURDETTE BARITE - FLUORITE DEPOSIT, GARRARD COUNTY, KENTUCKY, $ 12
RI 5503 / APPLICATION OF ELECTRICAL-RESISTIVITY SURVEYS TO EXPLORATION FOR ZINC-LEAD DEPOSITS, RACINE-SPURGEON AREA, NEWTON COUNTY, MISSOURI, $ 50

RI 5516 / TUNGSTEN DEPOSITS OF YUMA, MARICOPA, PINAL AND GRAHAM COUNTIES, ARIZONA, $ 40
RI 5517 / TUNGSTEN DEPOSITS OF NEW MEXICO, $ 29

RI 5518 / EXPLORATION OF LEAD-ZINC DEPOSITS IN THE ROSS BASIN - LAKE COMO AREA, SAN JUAN COUNTY, COLORADO, $ 10

 RI 5523 / SEPARATION OF RARE-EARTH ELEMENTS IN BASTINITE BY ION EXCHANGE, $ 7

RI 5526 / X-RAY EMISSION SPECTROGRAPHIC ANALYSIS OF HIGH-PURITY RARE-EARTH OXIDES, $ 5
RI 5531 / EXTRACTIVE METALLURGY OF EUXENITE, $ 7

RI 5552 / TUNGSTEN RESOURCES OF MONTANA:  DEPOSITS OF THE MOUNT TORREY BATHOLITH, BEAVERHEAD COUNTY, MONTANA, $ 27
RI 5554 / ELECTROWINNING TUNGSTEN AND ASSOCIATED MOLYBDENUM FROM SHEELITE, $ 7

RI 5555 / MOLYBDENUM CASTING EQUIPMENT, $ 9

RI 5561 / GEOLOGIC FACTORS RELATED TO BLOCK CAVING AT SAN MANUEL COPPER MINE, PINAL COUNTY, ARIZONA 2. PROGRESS REPORT, $ 25

RI 5564 / BENEFICIATING A COMPLEX SULFIDE-OXIDE LEAD-ZINC ORE FROM MISSOURI, $ 8

RI 5566 / EXPERIMENTAL TREATMENT OF BASE-METAL ORES FROM CALIFORNIA AND NEVADA, $ 8

RI 5576 / UTILIZATION STUDIES ON CHROMITE FROM SEIAD CREEK, CALIFORNIA, $ 18

RI 5577 / EXAMINATION OF ILMENITE BEARING SANDS IN OTTER CREEK VALLEY, KIOWA AND TILLMAN COUNTIES, OKLAHOMA, $ 20

RI 5598 / FLOTATION OF LOW GRADE MERCURY ORES, $ 16

 RI 5599 / TECHNOLOGY OF BASTNASITE, $ 5

RI 5612 / TUNGSTEN RESOURCES OF MONTANA: DEPOSITS OF THE PHILIPSBURG BATHOLITH, $ 38

 RI 5620 / FIELD TEST FOR BERYLLIUM MINERALS:  THE MORIN FLUORESENCE METHOD, $ 5

RI 5623 / CONCENTRATING ARGILLACEOUS SURFACE IRON ORE OF TUSCALOOSA COUNTY, ALABAMA, $ 6

RI 5641 / LABORATORY TREATMENT OF CALIFORNIA AND NEVADA MANGANESE ORES BY SULFATION REDUCTION AND OTHER METHODS, $ 7
RI 5643 / HYATT RANCH PEGMATITE, LARIMER COUNTY, COLORADO, $ 26

RI 5646 / FLOATATION OF PACIFIC NORTHWEST CHROMITE ORES, $ 11

RI 5647 / LABORATORY BENEFICIATION OF EAST TEXAS LIMONITE-SIDERITE IRON ORES, $ 9

RI 5649 / EVALUATING ANCHORAGE TESTING METHODS FOR EXPANSION - TYPE MINE ROOF BOLTS, $ 30

 RI 5650 / TUNGSTEN DEPOSITS OF COCHISE, PIMA, AND SANTA CRUZ COUNTIES, ARIZONA, $ 65
RI 5651 / BARITE DEPOSITS OF ARIZONA, $ 35
RI 5657 / RAPID EVALUATION OF SPODUMENE AND KYANITE SAMPLES BY HEAVY LIQUID SEPARATION, $ 6
RI 5670 / LAKE SUPERIOR IRON RESOURCES:  PRELIMINARY SAMPLING AND METALLURGICAL EVALUATION OF MESABI RANGE NONMAGNETIC TACTONITES, $ 10

 RI 5678 / STRUCTURAL PHASES IN LIME SODA SINTERS FOR ALUMINA RECOVERY:  A PROGRESS REPORT, $ 5
RI 5679 / CEBOLLA CREEK TITANIFEROUS IRON DEPOSITS, GUNNISON COUNTY, COLORADO, $ 26
RI 5684 / A METHOD FOR EVALUATING VISCOSITY DATA FROM LIME SODA SINTER SLURRIES, $ 5

RI 5685 / ACID CURING AND COUNTERCURRENT DECANTATION WASHING OF AN OXIDIZED COPPER ORE FROM PINAL COUNTY, ARIZONA, $ 7

 RI 5687 / VOLUMETRIC DETERMINATION OF URANIUM IN THE PRESENCE OF HIGH CONCENTRATIONS OF IRON, $ 7
RI 5693 / FERSMITE: A RARE CALCIUM-COLUMBATE MINERAL FROM MONTANA, $ 5

RI 5693 / PAPER COATING CLAY FROM COARSE GEORGIA KAOLINS BY A NEW ATTRITION GRINDING PROCESS, $ 6

RI 5712 / TITANIUM BEARING DEPOSITS IN SOUTH TEXAS, $ 15
RI 5718 / THREE CHEMOSYNTHETIC AUTOTROPHIC BACTERIA IMPORTANT TO LEACHING OPERATIONS AT ARIZONA COPPER MINES, $ 7
RI 5720 / SPECTROPHOTOMETRIC DETERMINATION OF TRACE AMOUNTS OF COPPER IN TUNGSTEN METAL POWDER, $ 4
RI 5728 / BENEFICIATING MANGANESE OXIDE ORES FROM THE BUTTE-PHILIPSBURG FEDERAL STOCKPILE, MONTANA, $ 30

RI 5729 / BENEFICIATING SPODUMENE FROM PEGMATITES OF GASTON COUNTY, NORTH CAROLINA, $ 10

RI 5740 / RECOVERING COBALT AND NICKEL FROM COMPLEX SULFIDE ORES OF SOUTHEASTERN MISSOURI, $ 10

RI 5746 / DETERMINING THE IN-PLACE SUPPORT OF MINE ROOF WITH ROCK BOLTS, WHITE PINE COPPER MINE, MICHIGAN, $ 35

RI 5750 / BENEFICIATING NORTH CAROLINA SPODUMENE-BERYL ORES, $ 10

RI 5751 / EXPERIMENTAL TREATMENT OF NEVADA AND CALIFORNIA FLUORSPAR ORES, $ 6
RI 5765 / SELECTIVE FLOATATION OF FINE-GRAINED LEAD-ZINC SULFIDES FROM IDAHO AND WASHINGTON, $ 12

RI 5767 / FLOTATION OF BERYL FROM NORTH-EASTERN PEGMATITES: A PROGRESS REPORT, $ 10

RI 5771 / LABORATORY CONCENTRATION OF SEVEN TITANIUM-BEARING ORES OF THE PACIFIC NORTHWEST, $ 6

RI 5772 / PHYSICAL AND MECHANICAL PROPERTIES OF SODIUM-REDUCED AND ELECTROREFINED TITANIUM, $ 5

RI 5775 / ELECTRIC SMELTING OF MONTANA CHROMITE CONCENTRATES, $ 10

RI 5790 / EXPERIMENTAL EXTRACTION OF GOLD AND SILVER ORES FROM CALIFORNIA AND NEVADA ORES, $ 20
RI 5793 / FLOTATION STUDIES ON COPPER-NICKEL SULFIDE ORES FROM DEPOSITS NEAR ROCKPORT, MAINE, $ 10

RI 5797 / COMPARATIVE STUDIES OF EXPLOSIVES IN MARBLE, $ 35

RI 5809 / DEFLUORINATION OF SILICEOUS FLUORSPAR AT ELEVATED TEMPERATURES, $ 7

RI 5817 / EXPERIMENTAL SMELTING OF UTAH AND WYOMING IRON ORES, $ 5
RI 5820 / ALUMINUM FLUORIDE FROM WET HYDROGEN FLUORIDE OFFGAS, $ 5
RI 5826 / COPPER RECOVERY FROM SEGREGATION FLOTATION CONCENTRATES BY AMMONIA CAL-AMMONIUM CARBONATE LEACHING, $ 7
RI 5835 / STATISTICAL ANALYSIS OF SAMPLE DATA FOR ESTIMATING ORE, $ 25

RI 5854 / EXPERIMENTAL TERTIARY AMINE FLOATATION OF ZINC SILICATE (HEMIMORPHITE) FROM MISSOURI, $ 6
RI 5860 / RECONNAISSANCE OF TITANIFEROUS SANDSTONE DEPOSITS OF UTAH, WYOMING, NEW MEXICO AND COLORADO, $ 18

RI 5861 / PREPARATION OF TUNGSTEN BY REDUCTION OF TUNGSTEN HEXACHLORIDE, $ 7
RI 5862 / SEPARATION OF TANTALUM FROM COLUMBIUM BY THE HYDROFLUORIC ACID - SULFURIC ACID ISOBUTYL KETONE SYSTEM, $ 8

 RI 5864 / IRON MOUNTAIN TITANIFEROUS MAGNETIC DEPOSITS, FREMONT COUNTY,  COLORADO, $ 20
RI 5869 / FROTH FLOATATION AND CHEMICAL PROCESSING OF COLORADO FERBERITE ORES, $ 15

RI 5874 / DISPOSAL OF LIQUID WASTE IN THE DURANGO-TYPE URANIUM MILLING FLOWSHEET, $ 12

RI 5875 / FLOATATION OF BERTRANDITE AND PHENACITE FROM MOUNT WHEELER, NEVADA, BERYLLIUM ORE, $ 8

RI 5881 / DEFORMATION OF A BOREHOLE IN ROCK, $ 29

RI 5882 / SEISMIC METHODS OF DETECTING AND DELINEATING SUBSURFACE SUBSIDENCE, $ 45

 RI 5884 / BENEFICIATION OF URANIUM ORES, $ 20
RI 5887 / EVALUATING CUYUNA MANGANESE RESOURCES BY SULFATIZING, $ 20

RI 5888 / IN SITU DETERMINATION OF THE DYNAMIC ELASTIC CONSTANTS OF ROCK, $ 15

RI 5889 / ISOLATION AND CHLORIMETRIC DETERMINATION OF RHENIUM, $ 10
RI 5890 / EFFECTS OF ULTRASONICS ON ELECTROLYTIC DEPOSITION OF COPPER AND ZINC FROM SULFATE AND CYANIDE ELECTROLYTES, $ 10

RI 5891 / RECOVERY OF GERMANIUM, CADMIUM, AND LEAD AS SULFIDES FROM ZINC CONCENTRATES BY BATCH AND FLUID SOLIDS ROASTING, $ 7

 RI 5894 / CHLORIDIZING THE SULPHIDES OF LEAD, ZINC, AND COPPER, pb, $ 7
RI 5898 / FIELD TEST FOR COLUMBIUM, $ 5
RI 5907 / FIELD TEST FOR GERMANIUM, $ 4
RI 5910 / EXTRACTION AND SEPARATION OF YTTRIUM AND RARE-EARTH ELEMENTS FOUND IN EUXENITE, $ 16

RI 5916 / RECOVERY OF THORIUM FROM ORES IN COLORADO, IDAHO AND MONTANA, $ 28

RI 5917 / RECOVERY OF THORIUM FROM A WYOMING ORE, $ 12

RI 5918 / SEPARATING TANTALUM AND COLUMBIUM BY SOLVENT EXTRACTION: HF - HCL - DIETHYL KETONE SYSTEM, $ 6

RI 5922 / BENEFICIATING AND SMELTING, CARTER CREEK, MONTANA IRON ORE, $ 16

RI 5924 / LEACHING MICHIGAN COPPER ORE AND MILL TAILINGS WITH ACIDIFIED FERRIC SULFATE, $ 9

RI 5934 / PRODUCTION OF MOLYBDENUM METAL BY MAGNESIUM REDUCTION OF MOLYBDENUM OXIDES, $ 15

RI 5937 / PREPARING METAL-GRADE VANADIUM OXIDE FROM RED CAKE AND MILL SOLUTIONS, $ 14

RI 5939 / SINTERING AND SMELTING MANGANESE CONCENTRATES FROM MAGGIE CANYON ORE, ARTILLERY MOUNTAINS AREA, ARIZONA, $ 25

RI 5940 / CONCENTRATION OF POLLUCITE ORES, $ 5
RI 5941 / SOLVENT EXTRACTION OF BERYLLIUM FROM SULFATE SOLUTIONS BY ALKYLPHOSPHORIC ACID, $ 7
RI 5955 / A STUDY OF COPPER REVERBERATORY SLAGS FROM WHITE PINE, MICHIGAN, $ 16
RI 5959 / ELECTROREFINING BERYLLIUM:  STUDIES OF OPERATING VARIABLES, $ 7
RI 5962 / TITANIFEROUS MAGNETITE DEPOSITS, LOS ANGELES COUNTY, CALIFORNIA, $ 29
RI 5959 / EXPERIMENTS IN PURIFYING SOLUTIONS FROM LIME-SINTERED BERYL CONCENTRATES, $ 5

 RI 5978 / BOREHOLE DEFORMATION GAGE FOR DETERMINING THE STRESS IN MINE ROCK, pb, $ 18

RI 5999 / CHANGES IN STRESS CONCENTRATION CREATED BY UNDERCUTTING IN BLOCK CAVING, $ 30

 RI 6002 / SOME NONMETALLIC MINERAL RESOURCES OF ALASKA, $ 4

RI 6003 / METALLURGICAL TESTING OF HAWAIIAN FERRUGINOUS BAUITES, $ 7
RI 6004 / RADIOISOTOPES AS TRACERS IN VOLATILIZATION STUDIES OF SELENIUM AND TELLURIUM, $ 6

RI 6005 / METHODS FOR DETERMINING MICROQUANTITIES OF IMPURITIES IN TUNGSTEN, $ 8

RI 6006 / FIELD TEST FOR TELLURIUM & SELENIUM, $ 8

RI 6013 / FLOTATION AND SINTERING STUDIES ON MANGANESE ORES STOCKPILED AT DEMING, NEW MEXICO, $ 29
RI 6016 / A PREFERENTIAL STAIN FOR BERYL, $ 4

RI 6018 / LEAD-SILVER DEPOSITS IN THE OMILAK AREA, SEWARD PENINSULA, ALASKA, $ 12
RI 6019 / AN EXPERIMENTAL MINE-SAMPLING PROJECT DESIGNED FOR STATISTICAL ANALYSIS, pb, $ 48

RI 6024 / RECONNAISSANCE OF TITANIUM RESOURCES ON SHIP ISLAND, HARRISON COUNTY, MISSISSIPPI, $ 20

RI 6031 / DEFLUORINATION OF FLUORSPAR: PREPARATION OF ALUMINUM FLUORIDE FROM SILICEOUS FLUORSPAR, $ 8

RI 6032 / DEFLUORINATION OF FLUORSPAR: PYROHYDROLYSIS AT 1500OC, $ 6

RI 6037 / STUDIES OF ANHYDROUS METHODS FOR EXTRACTING BERYLLIUM FROM LOW-GRADE ORES, $ 8

RI 6041 / COMPARATIVE STUDIES OF EXPLOSIVES IN SALT, $ 39

RI 6043 / RECOVERY OF MINERAL VALUES IN CUPRIFEROUS AND NICKELIFEROUS PYRRHOTITE, $ 10

RI 6046 / DIFFERENTIAL SULFATIZATION OF A GEORGIA MANGANIFEROUS IRON ORE, $ 5

 RI 6053 / EFFECTS OF STRESS RELIEF AND OTHER CHANGES IN STRESS ON THE PHYSICAL PROPERTIES OF ROCK, $ 10

RI 6056 / MEASURING CHANGES IN PILLAR STRAIN DURING PILLAR RECOVERY, $ 15

RI 6065 / FACTORS INFLUENCING THE DESIGN OF HYDRAULIC BACKFILL SYSTEMS 1. FRICTION-HEAD LOSSES OF SAND SLURRIES DURING PIPELINE TRANSPORT, $ 28

RI 6066 / FACTORS INFLUENCING THE DESIGN OF HYDRAULIC BACKFILL SYSTEMS 2. FRICTION-HEAD LOSSES OF BARITE AND LIMESTONE SLURRIES DURING PIPELINE TRANSPORT, $ 30

RI 6067 / A METHOD OF DETERMINING DYNAMIC TENSILE STRENGTH OF ROCK AT MINIMUM LEADING, $ 25

RI 6070 / FLOTATION OF SPODUMENE FROM PEGMATITES OF CLEVELAND COUNTY, NORTH CAROLINA, $ 10

RI 6082 / FLOATATION OF SIEGENITE IN A COMPLEX SULFIDE TABLE MIDDLING FROM SOUTHEAST MISSOURI, $ 6

 RI 6084 / BERYLLIUM BEARING TUFF FROM SPOR MOUNTAIN, UTAH: IT’S CHEMICAL, MINERALOGICAL, AND PHYSICAL PROPERTIES, $ 10
RI 6098 / RAPID DETERMINATION OF PERMEABILITY IN POROUS ROCK, $ 6

 RI 6102 / BACTERIAL LEACHING OF MANGANESE ORES, $ 7
RI 6103 / FLOTATION AND SINTERING STUDIES ON MANGANESE ORES STOCKPILED AT DEMING, NEW MEXICO, AND WENDEN, ARIZONA, $ 10
RI 6104 / LAKE SUPERIOR IRON RESOURCES:  FURTHER METALLURGICAL EVALUATION OF MESABI RANGE NONMAGNETIC TACONITES (REDUCTION ROASTING AND MAGNETIC SEPARATION), $ 10

RI 6106 / ESTIMATING DAILY EXPOSURES OF UNDERGROUND URANIUM MINERS TO AIRBORNE RADON DAUGHTER PRODUCTS, $ 10
RI 6110 / UNDERGROUND BORATE MINING, KERN COUNTY, CALIFORNIA, $ 75

 RI 6118 / SAMPLING OF LYNCH CREEK BERYLLIUM-TUNGSTEN PROSPECT, LANDER COUNTY, NEVADA, $ 10

RI 6121 / EXTRACTION OF MANGANESE FROM LOW GRADE DOLOMITIC MATERIALS BY A ROAST-LEACH PROCESS, $ 9

RI 6123 / FLOTATION OF NORTHEAST BIRMINGHAM, ALABAMA, HEMATITE ORES, $ 5

RI 6128 / BIAXIAL DEVICE FOR DETERMINING THE MODULUS OF ELASTICITY OF STRESS-RELIEF CORES, $ 22

RI 6132 / SPECTROCHEMICAL DETERMINATION OF BERYLLIUM IN BENEFICIATION PRODUCTS, $ 6
RI 6135 / USE OF A LARGE-DIAMETER AUGER IN MINING PITCHING ANTHRACITE, $ 22

RI 6137 / DETERMINATION OF STRESSES AROUND AN UNDERGROUND OPENING, CLIMAX MOLYBDENUM MINE, COLORADO, $ 20

RI 6138 / THE EFFECT OF SUSPENSION IN BOLTING BEDDED MINE ROOF, $ 45

RI 6139 / THE COMBINED EFFECTS OF FRICTION AND SUSPENSION IN BOLTING BEDDED MINE ROOF, $ 15

RI 6141 / TRENCHING AND SAMPLING OF THE RHYOLITE MERCURY PROSPECT, KUSKOKWIM RIVER BASIN, ALASKA, $ 15
RI 6153 / TREATING BERYL-SPODUMENE CONCENTRATES CONTAINING 10 TO 30 PERCENT BERYL BY THE FLUOROSILICATE PROCESS, $ 10

RI 6156 / RECOVERY OF BERYLLIUM FROM UTAH ORE BY THE FLUOSILICATE PROCESS, $ 7
RI 6165 / NOISE FROM PNEUMATIC ROCK DRILLS: MEASUREMENTS AND SIGNIFICANCE, $ 18

RI 6169 / INVESTIGATIONS OF STRESSES IN A DRILL BIT AND ROCK UNDER STATIC LOADS, $ 25

RI 6172 / FLOTATION OF ILMENITE FROM VIRGINIA SAPROLITE AND UNWEATHERED DIORITE ORES, $ 4
RI 6186 / RECOVERY OF LOW-SILICA CRYOLITE FROM SILICEOUS FLUORIDE OFF-GASES, $ 7

RI 6187 / SELECTIVE FLOTATION OF BARITE-FLUORSPAR ORES FROM KENTUCKY, $ 9

RI 6193 / OXIDATION LEACHING OF COPPER SULFIDES IN ACIDIC PULPS AT ELEVATED TEMPERATURES AND PRESSURES, $ 7
RI 6204 / MEASUREMENTS OF SURFACE SUBSIDENCE, SAN MANUEL MINE, PINAL COUNTY, ARIZONA, $ 38
RI 6211 / PHYSICAL AND CHEMICAL PROPERTIES OF SOME PACIFIC NORTHWEST HALLOYSITIC CLAYS, $ 10

RI 6213 / FLOTATION CONCENTRATION OF A COMPLEX BARITE-FLUORSPAR ORE, $ 8

RI 6214 / RECONNAISSANCE OF BEACH SANDS, BRISTOL BAY, ALASKA, $ 25

RI 6216 / STATISTICAL ANALYSIS OF CHURN DRILL AND DIAMOND DRILL SAMPLE DATA FROM THE SAN MANUEL COPPER MINE, ARIZONA, $ 25
RI 6223 / CONCENTRATION OF FINE MICA, $ 10

RI 6229 / METHOD FOR PRODUCING ALUMINA FROM CLAY:  AN EVALUATION OF THREE SULFURIC ACID PROCESSES, $ 16

RI 6247 / STATISTICAL ANALYSIS OF DIAMOND DRILL SAMPLE DATA FROM THE CEBOLLA CREEK TITANIFEROUS IRON DEPOSIT, GUNNISON COUNTY, COLORADO, $ 20

 RI 6246 / SOURCES AND RECOVERY METHODS FOR RHENIUM, $ 10

RI 6250 / DESIGN AND DEVELOPMENT OF A ROCK BOLT ANCHORED BY EXPLOSIVE FORMING: A PROGRESS REPORT, $ 36

RI 6263 / RECOVERY OF LEAD AND ZINC FROM SHALES, $ 9

RI 6270 / VIBRATIONS FROM BLASTING AT IOWA LIMESTONE QUARRIES, $ 26

 RI 6288 / RECOVERY OF ALUMINA FROM ANORTHOSITE, SAN GABRIEL MOUNTAINS, CALIFORNIA, USING LIME SODA SINTER PROCESS, $ 8

RI 6312 / A METHOD FOR DETERMINING STRESS IN ROCK, $ 6

RI 6313 / LIGHTWEIGHT AGGREGATES:  EXPANSION PROPERTIES OF CLAYS, SHALES, AND ARGILLITES OF MINNESOTA, $ 6
RI 6315 / SINTERING OF PYRRHOTITE CALCINE, $ 14

 RI 6322 / ACID LEACHING OF BERYLLIUM ORE FROM SPOR MOUNTAIN, UTAH, $ 7

RI 6324 / DRILLABILITY STUDIES:  DIAMOND DRILLING, $ 10

RI 6365 / TITANIUM RESOURCES OF WESTERN MONTANA, $ 28
RI 6368 / AMMONIACAL-AMMONIUM CARBONATE LEACHING OF MANGANIFEROUS MATERIALS FROM THE SOUTHERN DISTRICT, AROOSTOOK COUNTY, MAINE, $ 15

RI 6372 / MINE ROOF ROCK AND ROOF BOLT BEHAVIOR RESULTING FROM NEARBY BLASTS, $ 32

RI 6380 / ACCURACY IN ESTIMATING METAL CONTENT AND TONNAGE OF AN ORE BODY FROM DIAMOND-DRILL HOLE DATA, $ 25

RI 6385 / FLOTATION OF CALCAREOUS SCHEELITE ORES, $ 12

RI 6400 / STRESS DETERMINATIONS BY FLATJACK AND BOREHOLE-DEFORMATION METHODS, $ 40

 RI 6408 / MINERALOGICAL INVESTIGATION OF BERYLLIUM BEARING TUFF, HONEYCOMB HILLS, JUAB COUNTY, UTAH, $ 13

 RI 6413 / DETERMINATION OF PRINCIPAL STRESS DIRECTIONS THROUGH AN ANALYSIS OF ROCK JOINT AND FRACTURE ORIENTATIONS, STAR MINE, BURKE, IDAHO, $ 42

RI 6423 / LEACHING COPPER SULFIDE MINERALS WITH SELECTED AUTOTROPHIC BACTERIA, $ 15

RI 6434 / COMPARATIVE STUDIES OF EXPLOSIVES IN GRANITE, $ 30

RI 6442 / METALLURGICAL STUDIES OF RHODONITE ORES, SILVERTON DISTRICT, COLORADO 3. MELTING, QUENCHING, AND ACID LEACHING OF CONCENTRATES AND ELECTROLYTIC RECOVERY OF MANGANESE FROM SOLUTION, $ 30

 RI 6448 / BENEFICIATING LOW-GRADE CHROMITES FROM THE STILLWATER COMPLEX, MONTANA,  15

RI 6457 / SOLVENT EXTRACTION RECOVERY OF THORIUM AND YTTRIUM FROM SILICEOUS COLORADO ORES, $ 20

 RI 6459 / COST ESTIMATES AND OPTIMUM CONDITIONS FOR CONTINUOUS CIRCUIT LEACHING OF MERCURY, $ 12
RI 6462 / THE STRESS FIELD WITHIN A CORE STUB IN A BOREHOLE, $ 20

RI 6466 / CONTINUOUS FLOTATION OF BERYL FROM SPODUMENE MILL TAILING, FOOTE MINERAL COMPANY, KINGS MOUNTAIN, NORTH CAROLINA, $ 14

RI 6468 / PETROGRAPHIC STUDY AND CLASSIFICATION OF WESTERN PHOSPHATE ORES, $ 15

 RI 6477 / PROPERTIES OF HYDRAULIC BACKFILLS AND PRELIMINARY VIBRATORY COMPACTION TESTS, $ 28

 RI 6486 / PREPARATION OF COPPER POWDER FROM LEACH SOLUTIONS AFTER PRECIPITATION WITH IRON, $ 6
RI 6487 / DESIGN REQUIREMENTS FOR INSTRUMENTATION TO RECORD VIBRATIONS PRODUCED BY BLASTING, $ 6

 RI 6489 / ELECTROREFINING BERYLLIUM: OPERATION OF A PROTOTYPE CELL, $ 6
RI 6490 / TRIAXIAL METHOD FOR DETERMINING THE ELASTIC CONSTANTS OF STRESS RELIEF CORES, $ 29

RI 6491 / SELECTIVE FLOTATION OF A BARITE-FLUORSPAR ORE FROM TENNESSEE, $ 6

RI 6497 / ELECTRIC SMELTING OF TITANIFEROUS IRON ORES FROM ALASKA, MONTANA, AND WYOMING, $ 10

RI 6501 / APPLICATION OF SIMULATION IN EVALUATING LOW-GRADE MINERAL DEPOSITS, $ 32

RI 6512 / ELECTROLYTIC EXTRACTION OF TUNGSTEN FROM WESTERN SCHEELITE, $ 8

RI 6522 / POLYNOMIAL SURFACE FITTING USING SAMPLE DATA FROM AN UNDERGROUND COPPER DEPOSIT, $ 8

RI 6532 / FLOTATION TREATMENT OF EXPERIMENTAL IRON ORE TAILING FROM CHAMPION MINE, MARQUETTE RANGE, MICHIGAN, $ 12

RI 6533 / MODULUS OF ELASTICITY OF A ROCK DETERMINED BY FOUR DIFFERENT METHODS, $ 50

 RI 6541 / INVESTIGATION OF IN-SITU ROCK STRESSES, RUTH MINING DISTRICT, NEVADA, WITH EMPHASIS ON SLOPE DESIGN PROBLEMS IN OPEN-PIT MINES, $ 26

RI 6544 / A DEVICE FOR PLACING A BOREHOLE DEFORMATION GAGE IN A HORIZONTAL HOLE, $ 10

RI 6550 / STATISTICAL INTERPRETATION OF SAMPLE ASSAY DATA FROM THE MI VIDA URANIUM MINE, BIG INDIAN DISTRICT, SAN JUAN COUNTY, UTAH, $ 48

RI 6562 / A PROPOSED MODIFIED PERCOLATION-RATE TEST FOR USE IN PHYSICAL PROPERTY TESTING A MINE BACKFILL, $ 10

 RI 6569 / BENEFICIATION AND HYDROMETALLURGICAL TREATMENT OF COMPLEX MERCURY SULFIDE PRODUCTS, $ 12

RI 6570 / ELECTROREFINING BERYLLIUM, TWO CYCLE ELECTROLYSIS, $ 4

RI 6576 / EXPERIMENTAL CAUSTIC LEACHING OF OXIDIZED ZINC ORES AND MINERALS AND THE RECOVERY OF ZINC FROM LEACH SOLUTIONS, $ 15
RI 6577 / EXTRACTION AND SEPARATION OF RARE-EARTH ELEMENTS IN IDAHO EUXENITE CONCENTRATION, $ 24

RI 6584 / REDUCTION OF SEEPAGE LOSSES FROM CANALS BY CHEMICAL SEALANTS (IN TWO PARTS), 1. LABORATORY RESEARCH ON SODIUM CARBONATE AND OTHER COMPOUNDS, $ 14
RI 6589 / ANIONIC-CATIONIC FLOTATION OF MICA ORES FROM ALABAMA AND NORTH CAROLINA, $ 20

 RI 6611 / AN EVALUATION OF THE WESTERN PHOSPHATE INDUSTRY AND ITS RESOURCES (in 5 parts), 2. MONTANA, $ 55

RI 6614 / LIGHTWEIGHT AGGREGATES: EXPANSION PROPERTIES OF SELECTED ILLINOIS SHALES AND CLAYS, $ 10
RI 6619 / MECHANISM OF THE MONOCLINIC TO TETRAGONAL TRANSFORMATION OF ZIRCONIUM DIOXIDE, $ 10

RI 6632 / SPECTROCHEMICAL ANALYSIS OF TUNGSTEN, $ 24

RI 6634 / DESIGN OF DRILL-HOLE GRID SPACINGS FOR EVALUATING LOW-GRADE COPPER DEPOSITS, $ 24

RI 6635 / EXTRACTION OF TANTALUM AND COLUMBIUM FROM ORES AND CONCENTRATES BY CHLORINATION, $ 5

RI 6644 / SULFATIZATION OF NICKELIFEROUS LATERITES, $ 10

 RI 6645 / STATISTICAL ANALYSIS OF GAMMA RYA LOG SAMPLE DATA FROM A URANIUM DEPOSIT, AMBROSIA LAKE AREA, MCKINLEY COUNTY, NEW MEXICO, $ 24

RI 6647 / REMOVING COPPER FROM COPPER-CLAD STEEL BY OXIDATION, $ 4

RI 6649 / A STUDY OF THE CHLORINATION KINETICS OF GERMANIUM, SILICON, IRON, TUNGSTEN, MOLYBDENUM, COLUMBIUM, AND TANTALUM, $ 11

RI 6653 / STRESSES INDUCED AROUND MINE DEVELOPMENT WORKING BY UNDERCUTTING AND CAVING, CLIMAX MOLYBDENUM MINE, COLORADO, PART 1. USE AND EVALUATION OF GAGES FOR MEASURING STRAIN AND DEFORMATION, pb, $ 35

RI 6657 / RELATION OF DENSITY AND POROSITY DATA TO STRUCTURAL FEATURES OF ANTHRACITE, $ 26

RI 6662 / HYDROGEN REDUCTION OF GALENA AND SPHALERITE, $ 12

RI 6666 / STRESSES INDUCED AROUND MINE DEVELOPMENT WORKINGS BY UNDERCUTTING AND CAVING, CLIMAX MOLYBDENUM MINE, COLORADO, PART 2. STRAIN AND DEFORMATION MEASUREMENT, $ 10

RI 6668 / FLOATATION OF CALIFORNIA MICA ORE, $ 6

RI 6675 / DISTRIBUTION OF STRESS IN THE WESTVACO TRONA MINE, WESTVACO, WYOMING, $ 34

RI 6692 / EXTRACTION OF MANGANESE FROM GEORGIA UMBER ORE BY A SULFURIC ACID-FERROUS SULFATE PROCESS 1. COUNTERCURRENT-DECANTATION EXTRACTION AND AGGLOMERATION OF LEACHED RESIDUE TESTS, $ 9

RI 6704 / EXPLOSIVE-EXPANSION CENTER-HOLE ANCHOR, $ 5

RI 6714 / COPPER EXTRACTION FROM A LOW-GRADE ORE BY FERROBACILLUS FERROOXIDANS, $ 6

 RI 6719 / PILOT PLANT FLOTATION OF NONMAGNETIC TACTONITE AND SEMITACONITE, $ 10

 RI 6722 / THE MATRIX TYPE MAGNETIC SEPARATOR, $ 4
RI 6727 / THERMODYNAMIC PROPERTIES OF VANADIUM AND ITS COMPOUNDS, $ 32

RI 6732 / CALCULATION OF THE AVERAGE GROUND STRESS COMPONENTS FROM MEASUREMENT OF THE DIAMETRAL DEFORMATION OF A DRILL BIT, $ 38
RI 6744 / EXTRACTION OF ALUMINA BY LEACHING MELTED AND QUENCHED ANORTHOSITE IN SULFURIC ACID, $ 5

RI 6747 / IN-SITU MEASUREMENT OF ROCK DEFORMATION IN A VEIN-TYPE DEEP MINE: INSTRUMENTATION AND TECHNIQUES; ANALYSIS OF MEASUREMENTS IN THE STAR MINE, BURKE, IDAHO, $ 20
RI 6755 / CARBON REDUCTION OF CHROMITE, $ 12

RI 6762 / RECOVERY OF MANGANESE SULFATE CRYSTALS FROM SOLUTION BY SUBMERGED COMBUSTION EVAPORATION AND BY THERMAL CRYSTALLIZATION, $ 10

RI 6772 / DEMONSTRATION AND EVALUATION OF FIVE METHODS OF SECONDARY BACKFILLING OF STRIP MINING AREAS, $ 10

RI 6775 / REDUCTION ROASTING ACID SOLUTION TECHNIQUES IN LABORATORY PROCESSING OF MINNESOTA MANGANIFEROUS ORES, $ 9
RI 6776 / DRILLABILITY STUDIES: IMPREGNATED DIAMOND BITS, $ 10

RI 6778 / USING PROBABILITY MODELS AS A BASIS FOR MAKING DECISIONS DURING MINERAL DEPOSIT, $ 25

 USBM RI's - continue to part 4...




 USBM Reports of Investigation 1 (RI 2300 - 3800)
USBM Reports of Investigation 2 (RI 3801 - 5300)

USBM Reports of Investigation 4 (RI 6801 - 8300)
USBM Reports of Investigation 5 (RI 8301 - 9700)



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