Mining processes Do you know how a bal maiden bucked? Or what worked a whim? Or where you’d find the dressing floor? Discover how much more there is to mining than just digging a huge hole in the ground. Follow the ore from the rock to railway Glossary Key Stages In the Mining Process Breaking Ore Underground Haulage To the Surface and Transportation Dressing the Ore Extracting Arsenic Smelting Did you know? Hot flush Extreme heat was often a problem in the deeper mines, particularly in areas where the ventilation was poor - the temperature could rise in some workings by perhaps 1°C for every 60m (33 fathoms, 200ft) of depth.