The Monitor

The Monitor (HM12D8)

Location: Angels Camp, CA 95222 Calaveras County
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Country: United States of America
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N 38° 4.576', W 120° 32.828'

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Inscription

California Hydraulic Mining


Hydraulic Mining
was the largest and most destructive form of mining. Water, brought through flumes and ditches from high up in the mountains, was redirected into an ever-narrowing channel and out through a giant iron nozzle, called a "monitor." This high pressure stream of water was used to wash entire hillsides through enormous sluices to recover the placer gold.

By the early 1880s, it is estimated that 11 million ounces of gold had been recovered by hydraulic mining in California. However, hydraulic mining had a devastating effect on the environment, causing pollution in rivers and streams. Due to the environmental issues and lawsuits put forth by farmers, it was essentially outlawed in California in 1884. This monitor is believed to date to the late 19th century.
Details
HM NumberHM12D8
Tags
Placed ByAngels Camp Museum
Marker ConditionNo reports yet
Date Added Friday, October 24th, 2014 at 3:19pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)10S E 715147 N 4217118
Decimal Degrees38.07626667, -120.54713333
Degrees and Decimal MinutesN 38° 4.576', W 120° 32.828'
Degrees, Minutes and Seconds38° 4' 34.56" N, 120° 32' 49.68" W
Driving DirectionsGoogle Maps
Area Code(s)209
Closest Postal AddressAt or near 667 S Main St, Angels Camp CA 95222, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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