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- A study of falls of roof and coal in Northern Colorado
- A study of falls of roof and coal, Rock Springs Coal District, Sweetwater County, Wyo.
- Places of occurrence of injury from falls of roof
- Studies of roof movement in coal mines.
- Studies of roof movement in coal mines.
- Measurement of pressures on rock pillars in underground mines.
- Measurement of pressures on rock pillars in underground mines.
- Studies of roof movement in coal mines.
- Cooling mine air during summer months to prevent roof falls
- The microseismic method of predicting rock failure in underground mining.
- The microseismic method of predicting rock failure in underground mining.
- Control of roof and prevention of accidents from falls of rock and coal
- Suspension roof support.
- Roof movement study of mechanized retreating longwall operation, Lancashire no. 15 mine, Bakerton, Cambria County, Pa.
- Cementation of bituminous-coal-mine roof strata.
- Roof-span studies in limestone
- Method of determining the strength of a mine roof
- Cementation of bituminous-coal-mine roof strata :injection of epoxy and polyester-type resins
- Use of sonic techniques in exploring coal-mine roof strata :a progress report
- Survey of practices in controlling roof at intersections and junctions in underground coal mines
- The combined effects of friction and suspension in bolting bedded mine roof
- The effect of suspension in bolting bedded mine roof
- Geologic factors causing roof instability and methane emission problems :the Lower Kittanning coalbed, Cambria County, Pa.
- The relation of geology to mine roof conditions in the Pocahontas No. 3 coalbed
- Investigation of longwall gateroad roof support characteristics at Powhatan No. 4 Mine :instrumentation plan
- Geologic structures in coal mine roof
- Correlation of LANDSAT and air photo linears with roof control problems and geologic features
- Kettlebottoms :their relation to mine roof and support
- Geologic factors in coal mine roof stability :a progress report
- Ultrasonic convergence measurements
- Factors affecting respirable dust generation from longwall roof supports
- Coal mine air tempering :effectiveness, design, and roof support
- Recognizing signs of excessive loading in underground coal mines
- Coal mine roof instability :categories and causes
- A short-term evaluation of compressible stoppings used in trona mines
- Shield mechanics and resultant load vector studies
- Cutter roof failure :an overview of the causes and methods for control
- Critical-load studies of a shield support
- Shield-loading studies at an eastern Appalachian minesite
- Analysis of cutter roof failure induced by clastic dikes in an underground coal mine
- Arch canopy design procedure for rehabilitation of high-roof-fall areas
- Roof and rib fall accident and cost statistics :an in-depth study
- The character of five selected LANDSAT lineaments in southwestern Pennsylvania
- Application of stereoscopic (3-D) slides to roof and rib hazard recognition training
- Detection of roof instability by monitoring the rate of movement
- Strain energy as a basis for optimizing roof truss installations in bedded roof
- Horizontal and vertical load transferring mechanisms in longwall roof supports
- Roof truss contact forces
- Laboratory assessment of alternative longwall stabilization materials
- Stiffness characteristics of longwall shields