File photo dated 08/07/1988 of Dr Armand Hammer, 90-year-old chairman of Los Angeles-based Occidental Petroleum, arriving at Aberdeen Royal Infirmary to visit injured survivors of the explosion and ... more 
File photo dated 08/07/1988 of Dr Armand Hammer, 90-year-old chairman of Los Angeles-based Occidental Petroleum, arriving at Aberdeen Royal Infirmary to visit injured survivors of the explosion and fire disaster which wrecked his Company's North Sea production platform Piper Alpha. less 
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Fri, Jul 5, 2013 2:26 AM EDT