Ah yes...
*ahem*(adopts Nerdy Voice)
I think you'll find... that #7 is a General Electric 87t Diesel, built in 1975 and originally Algoma Steel #7, from Sault Ste Marie (
Soo Line territory, in case any of you had forgotten
)
Another interesting fact is that the designation
45-ton does not necessarily imply weight. 44-tonners were a four-axle, four traction motor, dual engine center cab unit built to skirt the requirement that any engine weighing more than 45 tons needed to have a fireman.
45-ton became a designator of engines of similar design, but with only a single traction motor per truck. Given that these are of that design, but were built for private industrial railroads, the weight/crew requirements did not apply to them. So, for increased traction, most of the D&S's
45-ton engines initially weighed in at 50 tons or more.
<Nerdy Voice OFF> ... and thanks for Google....
Nice pics - if only we had a Heritage railway that was 45 miles long in the UK!!!