R.I. Gen. Laws § 5-4-10
Whenever in this state coal or coke is being transported by a licensee or other person to a purchaser or consumer, the director of labor and training, or his or her agent or agents, may direct the person or persons having charge of that coal or coke to convey the coal or coke immediately to scales designated by the director of labor and training, or his or her agent or agents, and then the director, or his or her agent or agents, shall determine the quantity of that coal or coke and shall determine its weight, together with the tare weight, and shall direct the person or persons after unloading the coal or coke to return immediately to the scales where the original load was weighed and upon that return the director, or his or her agent or agents, shall determine the tare weight. The scales designated by the director, or his or her agent or agents, used as previously stated may be the public scales of any city or town or any other scales that have been tested and sealed and any scales as in the judgment of the director are most convenient; provided, that the provisions of this section do not apply to coal or coke while being transported in trains or cars operated by any railroad or street railroad authorized to do business in this state.
R.I. Gen. Laws § 5-4-10