I recently purchased a Bachmann 4-6-0 locomotive with DCC sound. Included in the box was a small package of what apppears to be coal or coal dust. My question is if anyone knows what this is for ? Additionally the locomotive came with chains that are to be installed on the sides of the tender. Does anyone have a suggestion as to how to install the chains. The directions simply state to attach the rings to the hooks on the sides of the tender but I donn't know if the hooks on the tender have gaps that allow the rings to be attached.