Various Coal ministers including Shibu Soren and Dasari Narayana Rao besides MPs cutting across the political class scuttled reforms in the Coal ministry that could have prevented the coal scam despite full support of Prime Minister Manmohan Singh in pushing reforms, former Coal Secretary PC Parakh said on Monday. br br "These two ministers resolutely opposed my proposal to put coal blocks to open bidding. Unfortunately, the Prime Minister was not able to control his ministers in the proposal that I made in 2004...I saw in the Ministry how Chief Executives and Directors of PSEs are appointed," he told reporters here.