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Showing: 1 to 10 of 67 matches for "magnetic declination"  Page   1   2   3   4   5   6   7 TITLE Data Accumulation On Selected Coal Measures In The Warrior Basin Of Alabama Including Search Of Unpublished Reports And Surface Field Mapping.  SUMMARY ... Data from these surface locations, a-nd coal cleat data from eight underground mines was corrected for magnetic declination and titled beds rotated to the ... PUBLISHED 1976 TITLE The Importance Of Both Geological Structures And Mining Induced Stress Fractures On The Hangingwall Stability In A Deep Level Gold Mine  SUMMARY ... magnetic substances on the readings. Where necessary a correction was made for magnetic declination. The Brunton compass is an instrument ... AUTHOR Quaye, G. B. PUBLISHED 1998 TITLE Virginia Beach Paper - Note on Certain Magnetic Phenomena in Gold-Bearing Slates  SUMMARY ... between those which caused the stronger declination and those which came from places with regular declination. I believe that the magnetic polarization'of the ... AUTHOR Mezger, C.A. PUBLISHED 1895 TITLE Accurate Directional Borehole Drilling: A Case Study at Navajo Dam, New Mexico – RI 9102  SUMMARY ... condition, a gener- ally accepted systematic accuray is '1". Compass units measure magnetic north and require a declination correction to ob- tain true north. ... AUTHOR Kravits, S. J. ; Sainato, A. ; Finfinger, G. L. PUBLISHED 1987 TITLE Paper - Magnetic Methods - A Background for the Application of Geomagnetics to Exploration (With Discussion)  SUMMARY ... Such lines on maps showing magnetic declination arc called isogonal lines. Such lines on maps showing magnetic inclination are called isoclinal lines. ... AUTHOR Stearn, Noel H. PUBLISHED 1929 TITLE Comparison of Rotary and In-Hole Motor Techniques for Drilling Horizontal Boreholes in Coal  SUMMARY Page 1. Bureau of Mines Report of Investigations/l985 Comparison of Rotary and In-Hole Motor Techniques for Drilling Horizontal Boreholes in Coal ... AUTHOR Kravits, S. J. ; Sainato, A. ; Finfinger, G. L. PUBLISHED 1985 TITLE Methane Drainage: Experience With Hydraulic Stimulation Through Slotted Casing  SUMMARY ... prop sand were also measured. All measurements were adjusted for magnetic declination and then plotted on rose diagrams (fig. 4). ... AUTHOR Lambert, Stephen W. ; Trevits, Michael A. PUBLISHED 1978 TITLE Logging and Log Interpretation - A Graphical Method of Dipmeter Interpretation Using the Stereonet  SUMMARY ... 1 electrode; ie, the angle which it makes with Magnetic North." Furthermore, we have to know how far out from the axis of the hole points A, B and C are lo ... AUTHOR Witte, A. J. De PUBLISHED 1957 TITLE Methane Drainage: Experience With Hydraulic Stimulation Through Slotted Casing  SUMMARY ... prop sand were also measured. All measurements were adjusted for magnetic declination and then plotted on rose diagrams (fig. 4). ... AUTHOR Lambert, Stephen W. PUBLISHED 1978 TITLE Two Borehole Photograph Goniometers  SUMMARY ... is related to the magnetic compass image on the photograph, the true strike direction of the fracture can be obtained knowing the local magnetic declination. ... AUTHOR Halstead, Perry N. PUBLISHED 1968 Showing: 1 to 10 of 67 matches for "magnetic declination"  Page   1   2   3   4   5   6   7 Search Again