I think any "secret door" comments were directed at the bashers on other sites who have maintained that since you can't see ore going up the conveyor that there can't be ore going into the mill at all, therefore the mill is not operating, no ore is being processed, yadda yadda yadda. Of course, we all knew that there had to be entrances other than the slot the conveyor runs into- otherwise the employess would have to ride the belt to get into the mill to work! In one picture I've seen, the end opposite the conveyor entrance is essentially one large door. I'll try to get that picture up in the photo section. I assume that they have been using frontloaders to take ore into the mill for processing. The piles under the crusher belt certainly seem to disappear somehow!