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- The Greeks started gold mining in 323 B.C and Romans took over
-The Romans built sluices and mined hydraulically
- During the 19th-20th century there were many gold rushes
- Some Gold was found in the Fraser River which started the Cariboo Gold Rush in 1858.
-40 years after the Cariboo, the legendary Klondike Gold Rush in Yukon started. This was one of the most productive periods in Canadian gold-mining history, and within 2-4 years, mined over 20 million dollars in gold
http://www.brilliantearth.com/gold-mining-environment/
http://nodirtygold.earthworksaction.org/impacts#.VFW6Cmd0zIU
http://www.colby.edu/academics_cs/courses/GE127/upload/Eisler2003.pdf
http://www.madehow.com/Volume-1/Gold.html
http://www.gold-traders.co.uk/gold-information/how-is-gold-mined.asp
http://www.thecanadianencyclopedia.ca/en/article/gold/
http://www.miningfacts.org/environment/what-is-the-role-of-cyanide-in-mining/
https://www.pwc.com/en_GX/gx/mining/publications/assets/pwc-the-direct-economic-impact-of-gold.pdf
http://www.ehow.com/how_10050431_make-flux-gold-refining.html
https://www.museumca.org/goldrush/fever19-hy.html
http://wells.entirety.ca/lode.htm
http://wells.entirety.ca/mining.htm
http://wells.entirety.ca/terms.htm#p
http://www.infomine.com/library/publications/docs/SummaryFactSheetCyanide.pdf
http://www.historynet.com/klondike-gold-rush
http://onlygold.com/Info/History-Of-Gold.asp
http://ucresources.net/why_gold_silver/gold_role/
http://www.oma.on.ca/en/ontariomining/EconomicContribution.asp
http://mine-engineer.com/mining/minproc/cyanide_leach.htm
-Gold mixed with sand/gravel
- Can contain large pieces of gold in the form of nuggets.
-Gold is washed down from lode deposits
- The main methods are hydraulic mining, dredging and sluicing
- These use gravity, water flow and vibrations
-Gold is mixed with other minerals
-Gold is obtained by drilling, blasting or shoveling
-Can run deep underground
-Uses pressure jets to erode or dislodge rock or other sediments
-involves extracting gold from underwater
- Gold mining produces toxic waste in the form of cyanide and mercury
-It destroys environment by getting rid of overburden (trees, plants, wildlife, habitats)
- Mining pollutes the water and land with cyanide
-Air pollution can be caused by transportation trucks
- Silicosis
-Decreased life expectancy
-Increased frequency of cancer of the trachea, bronchus, lung, stomach, and liver
-Risk of developing an insect-borne disease like malaria and dengue fever
-Noise-induced hearing loss
-Certain bacterial and viral diseases
-Diseases of the blood, skin and skeletal system
-medical equipment
-airbags
-laptops
-cellphones
-jewelry
flux mixture: borax and soda ash