Collection:
Juneau—Douglas City Museum
Object ID:
2007.22.002
Accession#:
2007.22
Credit Line:
Transferred from the U.S. Bureau of Land Management.
Object Name:
Monitor, Hydraulic
Title:
Hydraulic Monitor Nozzle
Year Range from:
1880
Year Range to:
1900
Description:
Hydraulic Monitor Nozzle
Used with a hydraulic giant/monitor mining operation. Rusted steel nozzle wider at base and narrower towards top. Metal is approximately .5 inch thick. Circular holes on either end. Hole at base is threaded with a tappered collar. Two wings at base designed to help tighten nozzle onto piping. Nozzle diameter is 2.5 inch.

Used for hyraulic mining in Silverbow Basin.
Notes:
Collected by Kevin Weir a BLM employee and Bureau of Mines employee from 1972 — 2007.

Hyraulic mining was first done in CA in 1853. No digging was necessary. It is a form of mining that employs water under pressure to dislodge rock material or move sediment. Large hoses were used to spray high pressure water onto a rock face, the water dislodges the rock bearing gold. The water and gravel were captured in long toms and washed in the usual fashion.
People:
Weir, Kevin
Search Terms:
Mine
Mining
Hydraulic
Silverbow Basin
gold
Placer
JMIC
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2007.22.0022007.22.002