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 135] [Entire Act] Union of India - Subsection Section 135(12) in The Coal Mines Regulations, 2011 (12)No untrained and inexperienced person(s) and contractor(s) shall be engaged for execution of any such work in the mine which involves working at heights and the dangers associated therewith.