Analysis and resolution of ground control problems in underground mines including roof instability, evaluation of roof support requirements, pillar "squeeze" conditions, coal bumps (bump 1)(bump 2, and floor heave in both room-and-pillar and longwall mining.

Multiple seam mine planning, stability analysis to quantify interaction from vertically adjacent mining, design of pillars, entries, production panels and mains to maximize safe mineral recovery. Numerical simulation and analytical evaluation of stability in upper and lower seams.

Multiple seam analysis is conducted for coal mines and multi-level limestone quarries.

Pillar design, stability analysis, and stress redistribution through yield-abutment pillars, longwall gateroad pillar, entry, and roof support design.

Boundary element numerical analysis of pillar and mine stability, stress distribution in multiple seam mining scenarios.

Subsidence prediction and abatement for longwall and room-and-pillar mines using SDPS computer based contouring of vertical subsidence, displacement, and strain or analytically using the hyperbolic tangent profile function.

Engineering geologic characterization of overburden strata, mine roof strength and behavior using rock mass classification (RMR or CMRR) and strength parameters.

Strength testing and physical property determination of rock, coal, concrete, and soil in accordance with ASTM, AASHTO, and ISRM standards.

Highwall stability for surface contour and highwall miner operations

Immediate stability analysis and pillar web design.

Remediation of falling highwalls.

Rock and soil slope stability using sliding wedge, planar toppling, and circular failure modes.

Examination of joint and fracture plane orientation on slope and highwall stability.

Groundwater and surface water diversion plans to dewater slopes and highwalls.

Pre-split and trim wall blast design.