Yes, and it seems that a lot of the big Gold compa

Yes, and it seems that a lot of the big Gold companies are based in Canada.  Which leads us to this organization chart of MSJ.  The main base appears to start in Canada at the top.  I could envision MSJ easily being part of Orion Resources (Yamana) per the link you posted.  But I look at the Coro Mining connection as just another possibility of maybe just another name for CORO being MSJ and the fact the MSJ email address leads to Jaime Arturo Anaya Trejo with the CORO logo of all things connected to Jaime.