. De re metallica. Metallurgy; Mineral industries. BOOK V. 123 If a vein is soft and the rock of the hanging and footwalls is weak, a closer structure is necessary ; for this purpose timbers are joined together, in rectangular shapes and placed one aftiT the other without a break. These. A—Wall plates. B—Dividers. C—Long end posts. D—End 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 Agricola, Georg, 1494-1555; Ho
. De re metallica. Metallurgy; Mineral industries. BOOK V. 123 If a vein is soft and the rock of the hanging and footwalls is weak, a closer structure is necessary ; for this purpose timbers are joined together, in rectangular shapes and placed one aftiT the other without a break. These. A—Wall plates. B—Dividers. C—Long end posts. D—End 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 Agricola, Georg, 1494-1555; Hoover, Herbert, 1874-1964. New York, Dover Publications
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Keywords: ., bookauthoragricolageorg14941555, bookcentury1900, booksubjectmin
