Traders/investors who enter "open" (i.e., market) orders to sell thinly traded stock are playing with fire. Such orders cannot be filled immediately by one transaction because the stock is so thinly traded. It usually takes several buy orders to match the one open sell order. That drops the market price a lot more than a single-transaction sell.
Looking at yesterday and todays trading, for example, such open orders caused a drop of $0.03 - $0.05 several times instead of a penny or no change. That obviously hurts all investors who hold the stock and is a tactic used by day-traders and speculators, who could care less about URRE and its stock holders.
Too bad the stock exchanges don't use the Amish practice of "Shunning" such people.