Ruby mined the bottom of a stack of 3 snow tiles. I heard them collapse and happened to scroll by to see her endlessly mining the remainder with an ongoing cascade of 0 Snow flying from the object. it only ended when another dupe mined the ice tile below. Ruby then proceeded to carry 0 mcg of snow until she had a narcoleptic fit and dropped it. the "snow" vanished..
mine snow? so far not reproduced..