He then continued his studies with a French scholarship to the École nationale supérieure des Beaux-Arts in Paris until 1968.
Twice he was awarded a scholarship by the Ministry of Culture, Recreation and Social Work in 1973 and in 1979.
Pennock was trained as a traditional sculptor, but quickly turned into an abstract, even minimalist artist.
In 1983-84 together with Kees Verschuren he developed a structure plan for art in a recreation area in the town of Spaarnwoude.
[4] The 1984 sculpture in Rotterdam, working title The River (see image), was placed at the West Blaak not far from the front of the academy building.