where you pull this out?

Emission till end of May was about 1 milion coins. I started mining about 20th may and difficulty was really hard and all miners were out.

At about that time, a bit before and latter, that guy David Andersen ( some professor on some USA university he is also on this forum and made post about it) optimized miner and rented lots of mining power to mine XMR and instantly dump it on Poloniex.

so if even he mined huge part of those 1 million XMR i have no ideas where you got 1.5 million number.


PS:
It is to hard to find his article where he posted all how it happened. i remember par of time he was on vacations with family. but i found this ethical dilemma he got into on 20th April: http://prntscr.com/arqyjz