I 28.23:9246
|
Underground coal mine track inspection and cleaning vehicle |
1 |
I 28.23:9247
|
Effects of abandoned multiple seam workings on a longwall in Virginia |
1 |
I 28.23:9248
|
Assessment of experimental longwall recovery rooms for increasing productivity and expediting equipment removal operations |
1 |
I 28.23: 9249
|
An improved method for determining helium in water |
1 |
I 28.23:9250
|
Primary gas toxicities and smoke particle characteristics during a two-stage combustion of mine conveyor belts : development of a test parameter |
1 |
I 28.23:9251
|
Tungsten and gold recovery from Alaskan scheelite-bearing ores |
1 |
I 28.23:9252
|
Recovery of principal metal values from waste hydroprocessing catalysts |
1 |
I 28.23:9253
|
Relationships between annulus thickness and the integrity of resin-grouted roof bolts |
1 |
I 28.23:9254
|
X-ray fluorescence analysis of superalloy leach liquors using a thin-film technique |
1 |
I 28.23:9255
|
Heat-resistant steels containing 8 pct Cr |
1 |
I 28.23:9256
|
Characterization of the Sheep Creek Pb-Zn-Ag-Sn prospect, north-central Alaska Range |
1 |
I 28.23:9257
|
Utilization of papermill sludges as binders for iron ore concentrate |
1 |
I 28.23:9258
|
Alkaline oxidative leaching of gold-bearing arsenopyrite ores |
1 |
I 28.23:9259
|
Impact of water sprays on scrubber ventilation effectiveness |
1 |
I 28.23:9260
|
Effect of energy and impact direction on coal fragmentation |
1 |
I 28.23:9261
|
Abrasive-enhanced water-jet drill for hard rocks |
1 |
I 28.23:9262
|
Primary gas toxicities and smoke particle characteristics during a two-stage combustion of mine brattices : development of a test parameter |
1 |
I 28.23:9263
|
Use of an in-seam tester to determine effects of bit type on primary dust generation |
1 |
I 28.23:9264
|
Alumina recovery from copper dump leaching liquors using a supported liquid membrane |
1 |
I 28.23:9265
|
Continuous flotation testing to recover a bulk sulfide concentrate from Missouri lead ore tailings |
1 |