excavating wheel
1wheel excavator — noun : a power driven wheel supported machine used for excavating trenches for tile drains compare backhoe …
2tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …
3mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …
4Anthropology and Archaeology — ▪ 2009 Introduction Anthropology Among the key developments in 2008 in the field of physical anthropology was the discovery by a large interdisciplinary team of Spanish and American scientists in northern Spain of a partial mandible (lower… …
5Bucket (machine part) — For other uses, see Bucket (disambiguation) and Scoop. A bucket (also called a scoop to qualify shallower designs of tools) is a specialized container attached to a machine, as compared to a bucket adapted to the form of a human being. It is a… …
6Shovel — For other uses, see Shovel (disambiguation). A man carrying shovels …
7Deep Impact (spacecraft) — For other uses, see Deep Impact (disambiguation). Deep Impact Artist s conception of the Deep Impact space probe after impactor separation. Operator NASA / JPL Major contractors Ball Aerospace, JPL …
8Trencher (machine) — A wheel trencher in South Africa A trencher is a piece of construction equipment used to dig trenches, typically for laying pipes or cables, or for drainage. Trenchers may range in size from walk behind models, to attachments for a skid loader or …
9technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
10Excavator — CAT 325C, fitted with quick coupler and tilting bucketAn excavator is an engineering vehicle consisting of an articulated arm (boom, stick), bucket and cab mounted on a pivot (a rotating platform, like a Lazy Susan) atop an undercarriage with… …
