News: CZL Consolidated Zinc Says CEO Brad Marwood Will Join Board As Managing Director, page-8

"He has overseen the recommencement of mining at Plomosas."

That has been successful and looking at it from both sides I'd say that Brad Marwood has decided after this initial stage that he sees the potential and wants to stick with it. And the company has seen his input and wants to keep him.
30 years of experience and a lot of success suggests he loves his work and gets satisfaction from the challenge of developing a business.