. Deep borehole surveys and problems. Boring. l_ J^'vl B' 'â h = -AB'5ine2+nn(5 Fig. h=+;SBsin92+an(S Ji .^ Fig. 167. 3. The Borehole Is on the Downstream Side of the Out- crop and the Strata Dip toward It (Fig. 167).âHere we get L = h- H or L = AB' sin d^ tan 5 - F (21d). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Haddock, M. H. (Marshall Henry). New York, McGraw-Hill

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