Industrial remnant by - Hob - on Flickr.This mental concrete structure is all that&amp;#8217;s left of the old Eden Colliery in Consett/Leadgate. It&amp;#8217;s the main air vent and housing for the fan that used to keep the air clean underground. I reckon if they&amp;#8217;ve not already done so, it should be listed by English Herrytaige. Not many things like this left.