Geologic Anomalies
Seam Thickness/Structure
Discontinuities
Igneous Intrusives
Coal Burn
Old Works Deliniation
30 CFR 75.388 Exploration of Old Works
& Reserve Delineations PDF
30 CFR 75.388 Exploration of Old Works
by Physical Detection PDF
30 CFR 75.388 Exploration for Old Works
from Surface PDF

Borehole Accuracy
Borehole Placement PDF
Precision Drilling PDF
Water Transfer Boreholes
Precision Drilling
De-Watering Overlying Abandoned Mines PDF
Acid Mine Drainage
Methane Recovery Boreholes
Commercial Coalbed Methane Recovery, Highwall Drilling PDF
Long-Inseam Degasification Boreholes PDF