Use of Surface Joint and Photolinear Data for Predicting Subsurface Coal Cleat Orientation: Issues 8101-8120

Measuring the Methane Content of Bituminous Coalbeds

Applying Computer-drawn Maps of Geologic Data to Analysis of Mining Problems: Issues 8151-8166

Geological Factors Affecting Methane in the Beckley Coalbed

Geologic Factors Causing Roof Instability and Methane Emission Problems: The Lower Kittanning Coalbed, Cambria County, Pa

Cleat in Bituminous Coalbeds

Use of Surface Joint and Photolinear Data for Predicting Subsurface Coal Cleat Orientation

Geologic Investigations of Underground Coal Mining Problems

The Direct Method of Determining Methane Content of Coalbeds for Ventilation Design

Methods of Determining the Orientations of Bedrock Fracture Systems in Southwestern Pennsylvania and Northern West Virginia

Report of Investigations: no.7381 to date

Beneficiation of Unweathered Indian Calcareous Phosphate Rock by Calcination and Hydration: By Philip C. Good ; Albany Metallurgy Research Center, Issues 8141-8160

Evaluating Plastic Scintillators for Detecting Prompt Gamma Rays: In Continuous Analysis of Bulk Materials, Issues 7901-7920