ITW, being an abbreviation for "Industriële en en Toegepaste Wiskunde", is the Dutch organization for Industrial and Applied Mathematics. Professor R. Timman has been one of the early promotors of ITW at the Delft University of Technology. For the sake of underpinning this statement, his "Intreerede" (Dutch) has been OCR-ed and made on-line.
But there are many other places in the world where
Applied rules the roast nowadays, even more as it is the case in Delft.
It cannot be denied, though, that there exists links to the World of Pure Mathematics. Most pure mathematicians in the Netherlands are a member of the so called Wiskundig Genootschap. The most important mathematical institute here is the CWI (Centrum voor Wiskunde en Informatica).
I don't know if he is still alive, but there is one more person I want to mention explicitly in this context. His name is Preston C. Hammer. He has been a professor at the Pennsylvania State University. Several of his articles and books have had great influence on my thoughts concerning mathematics. Here are two manuscripts from him which have never been published. (They were sent to me as a part of a private communication.) If you read these articles, you will easily understand why it's so difficult to find a publisher: