Is there any correlation between the position of the hatches (open or closed) on a refrigerator car and whether it's loaded or empty?
Nope.
Tony Thompson Editor, Signature Press, Berkeley, CA 2942 Linden Ave., Berkeley, CA 94705 www.signaturepress.com (510) 540-6538; fax, (510) 540-1937; e-mail, thompson@... Publishers of books on railroad history