Search U.S. government technical reports digitized or harvested by TRAIL.
The relation of geology to mine roof conditions in the Pocahontas No. 3 coalbed
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
Recognizing signs of excessive loading in underground coal mines
Factors affecting respirable dust generation from longwall roof supports
Coal mine air tempering :effectiveness, design, and roof support
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
Detection of roof instability by monitoring the rate of movement
Application of stereoscopic (3-D) slides to roof and rib hazard recognition training
Strain energy as a basis for optimizing roof truss installations in bedded roof
Horizontal and vertical load transferring mechanisms in longwall roof supports
Laboratory assessment of alternative longwall stabilization materials
Stiffness characteristics of longwall shields
Effect of load rate on wood crib behavior
Hillseam geology and roof instability near outcrop in eastern Kentucky drift mines
Two-leg longwall shield mechanics
Practical considerations in longwall face and gate road support selection and utilization