5 March 1977
Welsh racing driver Tom Pryce died on the tracks during the  South African Grand Prix in Kyalami on 5 March 1977. The horrific accident left two people dead; a marshal Frederick Jansen Van Vuuren, who was running across the tracks to help another driver whose car had caught fire and Pryce himself. The marshal’s body was torn in half when it was hit by Pryce’s car and Pryce was hit in the head by the fire extinguisher that the marshal had been carrying. Pryce was partially decapitated by his helmet strap and died instantly. Pryce is the only Welsh driver to have won a formula one race and the only Welsh to lead a Formula one World Championship Grand Prix. A statue of him has been erected in his hometown of Ruthin in his remembrance.
References

Bbc Tom Pryce [online] Available at: www.bbc.co.uk [Accessed on 1 March 2012]|Grand Prix DRIVERS: TOM PRYCE[online] Available at: www.grandprix.com[Accessed on 1 March 2012]