While his brother departed for a professional career in Brazil, Mijnals remained in Suriname, helping Robinhood to four national titles during his tenure with the club.

[4] In 1957, Mijnals moved to the Netherlands in pursuit of a professional career, joining USV Elinkwijk of Utrecht where he would play with his brother once more.

In 1957, Mijnals joined USV Elinkwijk from Utrecht competing the Dutch Eredivisie, the top flight of football in the Netherlands.

He joined his brother and former Robinhood teammates Michel Kruin, Erwin Sparendam and Charley Marbach once more.

He made two appearances in 1954, in a set of friendly matches against the Netherlands at the André Kamperveen Stadion in Paramaribo.