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 234] [Entire Act] Union of India - Subsection Section 234(4) in The Coal Mines Regulations, 2011 (4)The quantity of air passing at the place where it is intended to use the apparatus or machine for welding or cutting shall not be less than 284 cubic metre per minute.