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- Drilling and broaching in slate quarries
- Relation of dust concentration to depth of hole during wet drilling
- Some information from an investigation on methods of confining cardox blasting devices in boreholes in certain coal mines
- A method for surveying drill holes by oriented drill rods
- Ground-resistance measurements of drill-hole casings
- Diamond-drilling blast holes, eastern Magnetite Mine A
- Diamond drilling and diamond bit investigation
- Diamond drilling and diamond bit investigation.
- Diamond drilling of potash reserves in Eddy County, N.Mex
- Blast-hole diamond drilling in California mines
- Grouting diamond-drill holes at the Christmas mine, Gila County, Ariz.,with notes on the setting properties of cements and the use of liquid carbon dioxide as a pressuring agent in grouting
- Cable-tool coring with oil-base mud in Appalachian oilfields
- Exploratory drilling practices and costs at western uranium deposits
- Deformation of a borehole in rock
- Drillability studies :diamond drilling
- The stress field within a core stub in a borehole
- Accuracy in estimating metal content and tonnage of an ore body from diamond-drill-hole data
- Design of drill-hole grid spacings for evaluating low-grade copper deposits
- Inelastic deformation of rock under a hemispherical drill bit
- Drillability studies :statistical regression analysis of diamond drilling
- Drillability studies :impregnated diamond bits
- Calculation of the average ground stress components from measurements of the diametral deformation of a drill hole
- Explosive-expansion center-hole anchor
- Horizontal boring technology :a state-of-the-art study,
- Two borehole photograph goniometers
- Drillability studies-laboratory percussive drilling
- Energetics of percussive drills-longitudinal strain energy
- Wellbore enlargement test in a gas-storage well
- Prediction of penetration rate for percussive drilling
- Effect of organic additives on impregnated diamond drilling
- Technique of measuring initial deformation around an opening :analysis of two raise-bore tests
- Percussive drilling with independent rotation
- Effect of a surface borehole on longwall gob degasification(Pocahontas No. 3 Coalbed)
- Determination of attitudes of joints surveyed with a borescope in inclined boreholes
- Improvements in the three-component borehole deformation gage and overcoring techniques
- Cutting experiments using a rotating water jet in a borehole
- Rotary drilling holes in coalbeds for degasification
- Influence of surface-active chemicals on drilling and fracturing rock
- Transducer preparation gage assembly of the Bureau of Mines three-component borehole deformation gage
- Directionally controlled drilling to horizontally intercept selected strata, upper Freeport coalbed, Green County, Pa.
- Longer-than-seam-height drill development program
- Electromagnetic technique for locating boreholes
- Review of horizontal drilling technology for methane drainage from U.S. coalbeds
- Least squares calculation of horizontal stress from more than three diametral deformations in vertical boreholes
- Drilling a horizontal coalbed methane drainage system from a directional surface borehole
- Probability of encountering coalbed discontinuities during vertical and horizontal borehole drilling
- Site-specific and regional geologic considerations for coalbed gas drainage
- Control of longwall gob gas with cross-measure boreholes (upper Kittanning coalbed)
- Quartz dust sources during overburden drilling at surface coal mines
- Comparison of rotary and in-hole motor techniques for drilling horizontal boreholes in coal