. Deep borehole surveys and problems. Boring. PHOTOGRAPHIC METHODS 199 as seen in Fig. 134d, where distances h, c and d are for records 2, 3 and 4, respectively. Similar reasoning applies to Fig. 135 showing clinometer records. Figure 136 shows a. 494.5/^j. jniended Course ofHole 494.5'^'Jy]'j.iJ)r,r-Course265'?60' 200' of Hole 30^ Z20°Acfual4m ^""' 79^794° ?92 293 289.5 29i°294'' 292" 293 P I d n Fig. 136.—Actual survey of a Portuguese borehole. typical borehole survey from Portugal constructed from such records. We are indebted to the proprietors of Engineering, and C. F. Ca

. Deep borehole surveys and problems. Boring. PHOTOGRAPHIC METHODS 199 as seen in Fig. 134d, where distances h, c and d are for records 2, 3 and 4, respectively. Similar reasoning applies to Fig. 135 showing clinometer records. Figure 136 shows a. 494.5/^j. jniended Course ofHole_ 494.5'^'Jy]'j.~iJ)r,r-Course265'?60' 200' of Hole 30^ Z20°Acfual4m ^""' 79^794° ?92 293 289.5 29i°294'' 292" 293 P I d n Fig. 136.—Actual survey of a Portuguese borehole. typical borehole survey from Portugal constructed from such records. We are indebted to the proprietors of Engineering, and C. F. Ca Stock Photo
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. Deep borehole surveys and problems. Boring. PHOTOGRAPHIC METHODS 199 as seen in Fig. 134d, where distances h, c and d are for records 2, 3 and 4, respectively. Similar reasoning applies to Fig. 135 showing clinometer records. Figure 136 shows a. 494.5/^j. jniended Course ofHole_ 494.5'^'Jy]'j.~iJ)r, r-Course265'?60' 200' of Hole 30^ Z20°Acfual4m ^""' 79^794° ?92 293 289.5 29i°294'' 292" 293 P I d n Fig. 136.—Actual survey of a Portuguese borehole. typical borehole survey from Portugal constructed from such records. We are indebted to the proprietors of Engineering, and C. F. Casella & Co., London, the makers, . 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 work.. Haddock, M. H. (Marshall Henry). New York, McGraw-Hill

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