Is Cyanide Necessary To Make Gold?

Cyanide is a deadly poison but most gold is mined using cyanide. Why is cyanide necessary and are there any alternatives?
For my full video on Cyanide in the gold mining industry, see: https://youtu.be/EegTQuCEQlk

For those who want to learn more about Prospecting and finding gold check out my book, Fists full of Gold. It’s an encyclopedia of everything on the topic of prospecting. It’s available on Amazon. You can find it at (affiliate):
https://www.amazon.com/gp/product/0984269207/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0984269207&linkCode=as2&tag=nevadaoutback-20&linkId=ab9ce57d40522b1cc4764073f9d5638f
For even more information on prospecting, minerals, gems and other related information you can also check out my website at:
http://nevada-outback-gems.com/prospect/chris_prospect.htm
The Prospecting and Mining Journal magazine can be found at:
http://www.icmj.com