Mr. Catalino is what you call an expert landman surveyor.
As special category, he is a PERITO MENSURADOR, a legally binding authority at mining claims and legal constitution of mining property, in accordance to Chilean Mining Code - Legislation, expert at data management of mining claims, working in strict relationship to SERNAGEOMIN - NATIONAL SERVICE OF GEOLOGY & MINING, of Chile.
As a matter of interest, a Perito Mensurador is an authority appointed by the President of Chile, whereat no errors are allowed, by legislation.
Sure, anyone may contest in Court Mr. Catalino´s data in a Court of Law, however is clear that he is an expert at Court of Appeals, hence, his binding reports are also binding to Judidicla powers.
personally, I would place a lot of credibility to anything emanated from such person´s desk.