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 235] [Entire Act] Union of India - Subsection Section 235(5) in The Coal Mines Regulations, 2011 (5)Suitable pressure gauge shall be provided at the outlet side of the isolating valves on the main air range on the surface as well underground to ensure proper functioning of the valves.