What is Dasari Narayana Rao's role in coal scam?

What is Dasari Narayana Rao's role in coal scam? Part 1

What is Dasari Narayana Rao's role in coal scam? part 2


What is Dasari Narayana Rao's role in coal scam? part 3


What is Dasari Narayana Rao's role in coal scam?   What is Dasari Narayana Rao's role in coal scam?