Reading support:
The timeline shows rail shipments in Maine from 2001 to 2009. In 2009, the weight of rail shipments originating in Maine reached the total of about 2.02 million tons. The top commodities by weight originating in Maine were pulp and paper. The top commodity is based on the 38 two-digit Standard Transportation Commodity Code groupings and is determined by the tonnage either originating or terminating in the state (including intrastate shipments).