So where do I start? The art is very compelling and adds to the (depressing cold winter) feel of the game; it has been drawn very consistently, and though it might look basic, it's never out of place. The background sfx are very good, though volume is a tad too high. The intended game loop sounds very nice with a lot of complexities. Moving through the rooms takes a bit to get used to, but as you said in the description one just have to play around with it a bit to get it.
The issue I had, though it's actually with placing the objects, is that I can get the coal, but it doesn't load in the furnace when I click on the furnace door... I can get the goods boxes, but it doesn't give them to the customers asking for them. So this is a bit of a downer, as I would have loved to be able to play the game.
If I'm doing something wrong, let me know, as I would love to see a full playthrough.