North of England Institute of Mining Engineers. Transactions, Volume 6

air circulating air passing air-ways Allier ATKINSON average Aveyron Belgium benks Bituminous Blue metal board-gates Calvados candles cent centage coal measures coal pipes coke Colliery consumption countries County of Durham cubic feet departments diagram discussion distance district Ditto doors downcast drift dyke engine England English coal explosion extent extraction feet of air feet per minute Fence Houses following-up benks foreign coal France French coal fuel furnace Gateshead goaf goaves Grey post gross quantity Hérault Hunter river important increase Institute iron ironstone Lignite Loire Lundhill Colliery Marley Mayenne meeting mode motive column naked lights Newcastle Newcastle-on-Tyne Nord observed P₁ paper PLEWS Post girdle PRESIDENT production proportion Prussia quantity of air regulators Rhône Rosedale sandstone Saône Saône and Loire shale side South Wales specific resistance splits steam TABULAR STATEMENT temperature tion tons Total upcast shaft Valenciennes ventilating machine ventilating pressure ventilation Vouvant yards Yorkshire