Ujjal Narayan Sinha
Ujjal Narayan Sinha was an Indian judge and the Chief Justice of Patna High Court from 5 September 1970 to 29 September 1972. He was also the acting Governor of Bihar from 21 January to 31 January 1971.
Sinha was commissioned to produce a report into the December 1975 Chasnala mining disaster which killed 375 miners, the worst mining accident in Indian history. The report was submitted on 24 March 1977.