The rotary furnace worked by tumbling crushed ore down a pipe heated to 1,700 degrees Fahrenheit. Two gases were released, sulphur and mercury. The sulphur was allowed to pass through the rest of the system, while the mercury vapors were cooled within the condenser pipes. These vapors turned into liquid mercury and dripped down the pipes into buckets. The buckets were then dumped onto a table filled with lime powder, which absorbed any water or impurities from the liquid mercury. Seventy-six pounds of mercury were the poured into an iron flask and sealed for sale.
A 100-ton rotary furnace and condensing system was installed here in 1940. The furnace proved too large and this 50-ton furnace, which worked best when processing about 35 tons of ore, replacing the first one. Gould's furnace technology brought the New Almaden Mines into the 20th century, winning worldwide recognition for productivity. This furnace was used until 1976, when the property was purchased by the Santa Clara Parks Department.
|Placed By||Santa Clara County Parks|
|Marker Condition||No reports yet|
|Date Added||Thursday, October 23rd, 2014 at 7:12pm PDT -07:00|
|UTM (WGS84 Datum)||10S E 602594 N 4114865|
|Decimal Degrees||37.17458333, -121.84431667|
|Degrees and Decimal Minutes||N 37° 10.475', W 121° 50.659'|
|Degrees, Minutes and Seconds||37° 10' 28.50" N, 121° 50' 39.54" W|
|Driving Directions||Google Maps|
|Closest Postal Address||At or near 115 Wood Rd Trail, San Jose CA 95120, US|
|Alternative Maps||Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap|
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