Why? WHY??!!
Someone please tell me why a settler will leave TWO marble in a quarry, and go to work on an adjacent one -- until it is near empty -- and then both (or three!) exhaust almost at the exact same time?!
Is this by design to frustrate the average player, or by happenstance? Why don't they work one quarry till it's gone, then move to the other?? It seems to only happen with marble! ARGH!