Search results
Results from the WOW.Com Content Network
The 107-foot (33 m) digging ladder enabled the dredge to dig a cut with an average arc of about 275 feet (84 m). [14] This wide arc was possible because of the use of two spuds. [14] It could reach 17 feet (5.2 m) above water level and 48 feet (15 m) below it, with each of the 72 buckets capable of moving loads up to 16 cubic feet (0.45 m 3). [14]
Researchers used a network of 160 wells around the pond to lower the water table enough to permit excavation of the peat. The workers used shovels and hand tools to remove the peat until the level of the burials was reached. One of the lead archaeologists compared excavating the peat to trying to dig chocolate mousse under water. Only half of ...
A grab dredge. Dredging is the excavation of material from a water environment. Possible reasons for dredging include improving existing water features; reshaping land and water features to alter drainage, navigability, and commercial use; constructing dams, dikes, and other controls for streams and shorelines; and recovering valuable mineral deposits or marine life having commercial value.
Digging, also referred to as excavation, is the process of using some implement such as claws, hands, manual tools or heavy equipment, to remove material from a solid surface, usually soil, sand or rock on the surface of Earth.
Generally, the 3 pumps used in excavators consist of 2 variable displacement piston pumps and a gear pump. The arrangement of the pumps in the excavator unit changes with different manufacturers using different formats. The three main sections of an excavator are the undercarriage, the house and the arm. The boom, the front part that is ...
In 1965, he took over another bar, but kept his digging as a hobby. Altmann would mainly use a pickaxe for digging and occasionally explosives, after passing an explosives handling examination at the fire department. [7] He dug a second tunnel branching off from the first one, using a tunnel drilling machine he designed and built himself. [7]
Clarkson decides to leave portions of his farm for nature, a process called wilding. He uses an excavator to dig a pond and form a wetland area. He builds a dam on a nearby stream for water for the pond and adds 250 brown trout. He installs bird boxes for owls. He obtains four beehives for honey for the farm shop and to pollinate his crops.
Burrowing animals can be divided into three categories: primary excavators, secondary modifiers and simple occupants. [16] Primary excavators are the animals that originally dig and construct the burrow, and are generally very strong. [17] Some animals considered to be primary excavators are the prairie dog, aardvark and wombat. [18]