They were a unit in the sense that all the car number for a unit of oil was typed on one way-bill and the rate was based on multipal cars. They handled other traffic on those trains, as long as it did not add to the delay shown in these X-30 reports. In 1940 when they moved logs from Timber to interchange at Dolores to NML trains, they were on one way-bill, but other traffic was handled as well. The lumber company attempted to, and at one point had an agreement to run their own trains of logs with their own crews, but the RGS union agreement men would not let that happen. It was work they could handle and it was over their track covered by their agreement.