Hard Rock Hopper Looking into the mouth of the hopper which mine carts dumped into at the top of the Concentrator. Similar Images ...based on the tags: blur, grates, rocks, wooden... When I wasn’t paying enough attention on the rotten balcony, I accidentally put my foot through a rotten floorboard. I snapped a picture to remember the moment. On the National Mine property are two shafts, both serving the same workings. This one seems to have gotten some upgrades in the 1960s, judging from the condition of the metal. The dredge is divided into four levels. The top level has controls for the tailings boom and, when it was there, the bucket excavator. Pillsbury from across the Mississippi River and Stone Arch Bridge from the roof of the Washburn Crosby Elevator (aka Gold Medal Flour). Trees like masks. A tunnel connecting the two larger caves in the hill; those that Jacob vented in the rear. The vents are still extant! Above the offices is this little section of factory that still has strips of wood flooring. This may be where the upholstery was cut. The offices for the Five Roses elevator have long been boarded. To the left you can see the Manitoba Pool Elevator slogan, “Service at Cost”, meaning they would not make profit off farmers and dues. Beside the shaft building are two fans on skids, indicating they were used underground.