Page 270 - Moving the Earth_ The Workbook of Excavation

PONDS AND EARTH DAMS

6.6 THE WORK

FIGURE 6.4 More dragline cuts.

them or swinging them back periodically. This extends the pile toward the rear and leaves room
for more on top. This is practical if ground conditions permit work without platforms, but other-
wise takes too much walking time. A second dragline working behind the windrow and swinging
it back makes a very effective combination.
If the excavation is narrow and shallow, and the banks are narrow, a long boom dragline may
excavate without building a pile by placing each bucket load in its final position.

Double Cuts. If the width of the pond is to be greater than can be dug in the two cuts described,
the dragline may make additional cuts, first removing the soil windrow, then the ground under it.