 Complete the following phrase:  He participated in 15 World Championship Grands Prix, debuting on 1 January 1968. He achieved one podium in the 1968 Spanish Grand Prix, finishing third in a Cooper-BRM behind Graham Hill in a Lotus-Ford and Denny Hulme in a McLaren-Ford. He then had an accident at the Belgian Grand Prix at Spa-Francorchamps, crashing his Cooper-BRM when the suspension broke at the Les Coombes corner; he survived with a badly broken arm. He scored a total of 8 championship points in his career, with two 5th places in 1972, at the 