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To experiencee rail fans these are
"Full Gravel Loads" to the novice the question comes,"Why
don't they fill em up?" The relative density (weight) of coal and
gravel is well demonstrated because a coal load will fill the cars to the top. Gravel loading level is marked about three feet from the bottom side rail of the car. Thus gravel meets the maximum weight capacity for the hopper long before it is filled. |