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[is3]

3 years ago on this day Igor Yurievich Shkurin, also known as Igor Grek, died. Igor Shkurin was a graduate of the Military Institute of the Ministry of Defence of the USSR and served as a military investigator. In retirement he became interested in revising history using his experience in professional forensics. During more than 10 years of

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[peffermillen]

I remember the website, there I found also some interesting articles about saltpeter, ... and the extraction in Egypt through christian monasteries (in fact factories), about 500 of them were in Wadi Natrun in their haydays

It is definitely worth reading his articles