With the faintest of clicks Jovik feels the lock on the door yield. He turns the handle slowly, quietly, hearing it release the faintest of creaks as it swings open. From inside the noise of the furnace leaks out, all too noticeable above the silence that has fallen upon the group. Mal lets out the faintest of growls.
Inside the door is a small loading room, roughly rectangular in shape, stretching off before you. There are two doors on the left wall, a set of double doors in the wall ahead, and one on the wall to the right. A wheelbarrow sits up against the left wall here, and the shelves that fill the room contain additional reagents to create glass of different colours. A heavy metal safe on the floor near the door you just opened hangs open, its contents missing. The room is otherwise untouched, a storage area and tradesman's entrance.
The noise of the furnace is evident coming from the set of double doors ahead. You may elect to listen at the other doors if you desire.