During the shipping season of 1955, the DM&IR tested EMD's SD9 locomotive. EMD 5591 was painted in what became the Missabe's second diesel paint scheme with a unique herald applied to the side of the cab. This demonstrator proved successful as the railroad placed an order for 10 SD9s for delivery in 1956 (101-110). This unit came back to the Missabe as DM&IR 110 and was sent to the B&LE in 1967. Of note is the non standard fuel tank with what appears to be EMD applied weights to get this engine to 387,000 pounds on driver. The Missabe would apply their own style of weights on subsequent orders with toolbox and knuckle holders attached. Basgen photography, MRHS collection.