Probably a lot of short-haul truck moves. This is why statistics are typcially made using ton-miles, not just tons. In any case, Hazardous waste is a small and insignifcant part of the US freight market. Why bring it up? Why would rail haul much, say, hospital waste, or animal renderings?
share of US freight market -
Your statistics appear to be by revenue, not by freight actually hauled. Since rail is cheaper, it will certainly have lower revenue both absolutely and per ton and per ton-mile.
Again, what do you think you are prooving?
Also, aren't you familiar with any sources on the industry giving information that is not 10 years out of date? There are industry trade magazines online like Railway Age.
PS - also, Available road miles of rail have dropped by 50% since 1960.
Again, so? Most of that is consolidation of main lines and abandonment of branch lines. More tonnage is hauled today on fewer lines. Private Enterprise is busy at work making its physical plant more competitive and efficient. Comparing the system from 1960 to today and thinking something is proven by showing less mileage is like saying that since the Interstate System has less milage than the US Highway system it supplanted, therefore, roads must be in decline.
What is your point?