Sluicing


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sluicing

[′slüs·iŋ]
(mining engineering)
Washing auriferous earth through sluices provided with riffles and other gold-saving appliances.
Separation of minerals in a flowing stream of water.
Moving earth, sand, gravel, or other rock or mineral materials by flowing water.

Sluicing

 

a process of primitive mining of alluvial deposits in which they are washed by a free-flowing stream of water released along a trench that cuts through a deposit. Washing through and gradually deepening the trench, the water carries away the lighter, valueless rock. The heavier minerals, which are to be mined, settle to the bottom of the trench and are then extracted by means of a washing drum and pans. Sluicing was the most highly productive means of mining gold-bearing placers at the end of the 18th and the beginning of the 19th century. The perfecting of the method of sluicing of ore in the 1830’s in the Urals laid the basis for the hydraulic process of mining deposits. In the USSR, sluicing has everywhere been replaced by mechanized mining processes, including the use of an excavator, a bulldozer, or a scraper and hydraulic and dredging equipment.

REFERENCE

Shorokhov, S. M. Razrabotka rossypnykh mestorozhdenii i osnovy proektirovaniia. Moscow, 1963.

V. A. BOIARSKII

References in periodicals archive ?
In this paper, I present an interesting case in Dutch of sluicing that does not seem to have a straightforward source under a deletion account (unless the account is sufficiently abstract to ignore the expression of R-features).
Merchant (2001) has truly opened the floodgates, and a stream of papers on sluicing is currently enriching our knowledge of how case marking, preposition stranding, and so on show their true colors in the theatre of ellipsis.
The syntax of silence: Sluicing, islands, and the theory of ellipsis.
Absence of Case-matching Effects in Mongolian Sluicing.
Note that both authentic and translated texts signal a similar asymmetry between the relation of the instances of sprouting to those of sluicing (but consider that non-embedded sprouting achieves the frequency rate of 100% in Table 5).
It is a safe assumption then that a felicitous account of sluicing, and ellipsis in general, is best framed in terms of syntactic and semantic licensing with an option of admitting pragmatics, where both embedded and non-embedded orphans contribute to the analysis.
The status of sluicing as a syntax-unrelated rule, however, has not been accepted.
For one thing, sluicing requires a structurally identical antecedent (syntactic licensing) by default, even if this requirement has been subject to relaxation ever since Early OE.
The other conclusion mirrors Ginzburg and Sag's argument in that it addresses the part that embedding plays in sluicing.
Merchant, Jason 2001 The syntax of silence: sluicing, islands, and the theory of ellipsis.
1) I wish to express my thanks to Ivan Sag for information and discussions about sluicing, and to Matti Kilpio and Matti Rissanen for comments and guidance on my research.
A few texts, with instances of sluicing in them, are left unidentified, thus excluded from the statistics.