Search U.S. government technical reports digitized or harvested by TRAIL.
Diamond-drilling blast holes, eastern Magnetite Mine A
Blast-hole diamond drilling in California mines
Exploratory drilling practices and costs at western uranium deposits
Horizontal boring technology :a state-of-the-art study,
Determination of attitudes of joints surveyed with a borescope in inclined boreholes
Review of horizontal drilling technology for methane drainage from U.S. coalbeds
Site-specific and regional geologic considerations for coalbed gas drainage
Quartz dust sources during overburden drilling at surface coal mines