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Grivity Process Technologies Equipment Mining Gold Price

2 about the authors henry lyatsky is a calgary-based geophysical and geological consultant who has worked across canada and internationally in oil and mineral exploration.He was born in st.Petersburg, russia and moved to calgary as a teenager.He holds a b.Sc.In geology and geophysics 1985, university of calgary, and m.Sc.In geophysics 1988, university of calgary and a ph.D.In.

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