Louis Brandeis, Midland Valley Company v. Barkley…
“ When mining was resumed in August, an acute car shortage developed. Coal is usually shipped in open top cars; and tipple mines, which are the largest producers of coal, can use only cars of that type. The supply of these being inadequate, the Midland, like other carriers, distributed the available open top cars among the tipple mines and its box cars among the wagon mines. ”
