Regarding overman and Sirdar in nlc

JayKumar: Can Second class manager is eligible to work as overman in highly mechanized open cast mines

JayKumar: On what basis Coal India Limited is accepting BE graduates as overman or mining sirdar

JayKumar: In CMR it is mentioned some where or what sir?

And B.E graduates are eligible to apply for NLC as an overman and Sirdar posts?