Cumberland Railway and Coal Company Train Order

I recently won eight blank train orders from the Cumberland Railway and Coal Company. Here's what they look like.


It looks like they were printed in November 1950. That would fit well before the closure of the railway in 1962. The CR&C operated near Springhill, Nova Scotia.

Anyone know what they mean by "Don't forget your cross... protect your train"? Is that the staff train order system that was in use on some railways? (Wikipedia)