. De re metallica. Metallurgy; Mineral industries. 302 BOOK VIII. place, he removes with a shovel the mud and sand which are mixed with minute particles of metal, and washes them on a canvas strake. Sometimes before the buddies have been fiUed fuU, the boys throw the material into a bowl and carry it to the strakes and wash it. Pulverized ore is washed in the head of this kind of a buddle ; but usually when tin-stone is washed in it, interlacing fir boughs are put into the buddle, in the same manner as in the sluice when wet ore is crushed with stamps. The larger tin-stone particles, which sin
. De re metallica. Metallurgy; Mineral industries. 302 BOOK VIII. place, he removes with a shovel the mud and sand which are mixed with minute particles of metal, and washes them on a canvas strake. Sometimes before the buddies have been fiUed fuU, the boys throw the material into a bowl and carry it to the strakes and wash it. Pulverized ore is washed in the head of this kind of a buddle ; but usually when tin-stone is washed in it, interlacing fir boughs are put into the buddle, in the same manner as in the sluice when wet ore is crushed with stamps. The larger tin-stone particles, which sink in the upper part of the buddle, are washed separately in a strake ; those particles which are of medium size, and settle in the middle part, are washed separately in the same way ; and the mud mixed with minute particles of tin-stone, which has settled in the lowest part of the buddle below the fir boughs, is washed separately on the canvas strakes. The divided buddle differs from the last one by having several cross- boards, which, being placed inside it, divide it off like steps ; if the buddle is twelve feet long, four of them are placed within ; if nine feet long, three. The nearer each one is to the head, the greater is its height; the further from the head, the lower it is ; and so when the highest is a foot and a palm high,. A—Pipe. B—Cross launder. C—Small troughs. D—Head of the buddle. E—Wooden scrubber. F—Dividing boards. G—Short 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
Size: 1535px × 1628px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthoragricolageorg14941555, bookcentury1900, booksubjectmin
