Unlock Advanced Research with PRISMAI Integrated with over 4 crore judgments and laws — designed for legal practitioners, researchers, students and institutions - Know your Kanoon - Doc Gen Hub - Counter Argument - Case Predict AI - Talk with IK Doc - ... Upgrade to Premium Document Options Get in PDF Print it! [Cites 0, Cited by 0] [Section 150] [Entire Act] Union of India - Subsection Section 150(9) in The Coal Mines Regulations, 2017 (9)The precautions under this regulation shall be carried out under the direct supervision of an official, having Manager's Certificate or Overman's Certificate specially authorised for the purpose.