VENTILATION

Standard of ventilation:-Not less than6m3/min/person employed in district on largest shift or not less than2.5m3/mm/ton output.Which ever is larger should be pass in the last ventilation connection in the district which means the in by most gallery in the district along which air passes.Oxijen not less than19%co2and other gas not more than ୦.5%•%of inflammable gas:-Not more than0.7%in general body of return air not more than1.25%in any place in the mine.wet bulb temperature not more than33.5°c and where W.B.T exceed 30.5°c curent of air moving at a speed of not less than1m/sec.Air sample and temperature reading shall taken at least once in 30days.                        Main mechanical ventilatior installed one sure face at a distance of not less than 10meter from opening of shaft or incline.Ac/p exaine every mechanical ventilatior once in every 7days.The quantity of air measured once at least every14days for2nd and 3rd degree of gassy mine and once in every 30days for first degree or non gessy mine..The manager of everyone submit the standing order about installation of mechanical ventilatior to the RI within 60days and within30days in case of new installation.Ac/p examine every airway,air crossing, ventilation stopping and door at least once in every14days