. Machinery for metalliferous mines : a practical treatise for mining engineers, metallurgists and managers of mines. Fig. 172.—Foundations for Stamp Battery. shown also in fig. 173. The spaces between these are filled in withshorter blocks of timber about 2 ft. long, arranged side by side under the. Fig. 173.—tbuNDATioKS for Stamp Battery. double cross timbers (^ l>), of which there are six, two being closetogether (^ i)) under the mortar block, one near each end, and onehalfway between the end and the centre, as /> b. On the top of this 264 MACHINERY IOR METALLIFEROUS MINES. floor of t
. Machinery for metalliferous mines : a practical treatise for mining engineers, metallurgists and managers of mines. Fig. 172.—Foundations for Stamp Battery. shown also in fig. 173. The spaces between these are filled in withshorter blocks of timber about 2 ft. long, arranged side by side under the. Fig. 173.—tbuNDATioKS for Stamp Battery. double cross timbers (^ l>), of which there are six, two being closetogether (^ i)) under the mortar block, one near each end, and onehalfway between the end and the centre, as /> b. On the top of this 264 MACHINERY IOR METALLIFEROUS MINES. floor of timber are placed other timbers similar to the lower ones, asshown in the section (fig. 172), and the spaces between the timbers,except under the mortar blocks which contain blocks of timber 2 , are filled up with stones, clay, loam, well rammed in, and themain timbers are well rolled together. The mortar block (e), 18 , is placed onthe top of this foundation, and its ends are boundwith iron. If the ground is solid rock, the bottom limbers are arranged parallel tothe longer sides of the mortar box, and are let into the rock to whichthey are anchored by ig-in. bolts 3 ft. long. The cross timbers areplaced over these, and rest on the rock; on these the horizontal mortarblock is
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