Cleansing of flue gas

✍ Scribed by R.H.O.

• Publisher: Elsevier Science
• Year: 1935
• Tongue: English
• Weight: 155 KB
• Volume: 219
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(35)92047-6

✦ Synopsis

Hydraulic Giants Make Highway Cut.-(Construction

Methods,

Vol. 17, No. 4.) A water system and hydraulicking equipment of two giants was leased from the La Grange Placer Mines, Ltd., for work on a highway grading job in Trinity County, Calif., involving removal, by water spray, of about 6,ooo,000 cubic yards of earth. The two giants already have served their time in washing out goldbearing gravels.

The nozzles are 7 and 8 in. in diameter, respectively and are served by a main pipe line 30 in. in diameter at the upper end, 26 in. lower down, with two 18 in. branches serving them. The total operating head is 550 ft. and the 8 in. nozzle passes water at the rate of 60 sec.-ft.

The water supply is from a stream feeding a regulating reservoir of 600,000 cubic feet capacity.

The large nozzle has been rated as averaging 800 cubic yards per hour, the material moved being about 10.7 per cent. of the volume of the water used. In a normal year operation is expected for at least 75 per cent. of the working season.

It is thought that well over I ,OOO,OOO cubic yards of material will be moved in 1935. Operations will probably continue for four years.

R. H. 0.