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A Canadian National Railways ledger book, used to record cash receipts
and to register boxcar loads. A boxcar, for instance, was only
allowed to remain in the yard for 48 hours, after which it had to pay
a certain per diem 'demeurage' rate. In the early parts of the century,
such log books were kept in every station to keep track of where a boxcar
was moving and whether it reached its destination. Nowadays, where the
trains still run, the technology has advanced astronomically. There are
actually silicon chips in the boxcars which interact with receivers
at certain junctures on the rail line.
(Railway Heritage Association, photo by Tom MacDonald) |
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