Right time, right place and I came across this UP local freight crew which had just finished up switching Heller Lumber in Arlington Heights, set the derail on the spur, threw the switch from the spur to the mainline, backed up, the proceeded east.
The tank cars are probably from Fujifilm in Rolling Meadows.
From Morton Salt northwest to Crystal Lake there are just two active rail customers left-Fujifilm and Heller. Off the McHenry branch there are still two UP rail customers and to the northwest there are additional ones.
This image is a low-res version to fit the size limitations.
