'What is Happening to Gold and Silver ' - (Miles Franklin), page-2

... and from another author in the article -

As a former spot currency trader for a major international bank, I have had first-hand experience of central banks directly intervening in currency markets in massive size, repeatedly. You'll hear a lot of people say market manipulation is a conspiracy theory, despite the fact that it has been proven in court several times in various assets classes and especially in precious metals. Books have been written about Gold and Silver manipulation for decades. Central Bankers have admitted it publicly. Now it has become so obvious that it's predictable. I know because I made 500% in less than 24 hours on Friday last on a 1-week SLV 15.50 strike put option I bought on Thursday at 2 pm. I bought that put expecting the Bullion Banks to come in and hammer the metals, given the typical signals I was seeing ahead of each time they slam Gold and/or Silver lower. Moreover, I began warning people on Twitter a week ahead of time that this could happen (note the dates posted): ​

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