North of England Institute of Mining Engineers. Transactions, Volume 7

aggregate quantity air circulating air passing air-courses air-ways anemometer Atkinson bed of ironstone boards changes of density coal College course cubic feet current of air diagram difference of density dip split distance district downcast shaft drift effect Eppleton feet of air Fence Houses Ferry Hill furnace Gateshead goaf goaves Greenwell Grosmont gross quantity Hetton Colliery inches inches of mercury increased Institute intake air intake and return leakage long current long split magnetic main regulator meeting mines mode motive column Newcastle Newcastle-on-Tyne NICHOLAS WOOD opinion panel pillars place of Measurement proportion quantity of air remarks resistances return air revolutions per minute rise split Rosedale safety-lamp set of experiments Shale Short Current short route short split South Hetton splits of air stoppings strata Swainby Taylor top seam traversed University of Durham upcast shaft velocity ventilating power ventilating pressure Wales water gauge whole yards