sentences:  Chirayu became Minister of Industry under Prime Minister Prem Tinsulanonda in 1985, and Minister to the Office of Prime Minister one year later.After he had taken a stand for a controversial tantalum factory in Phuket Province that was burnt down by furious locals who were afraid of hazardous wastes, Chirayu was confronted with allegations of corruption, that could however not been proven.Later, King Bhumibol appointed him Director-General of the Crown Property Bureau (CPB), that is responsible for administering the immense royal assets.