I have been following the progress of a new Portland and Western hotbox/dragging equipment detector installation out on the Tillamook Branch at MP 759.7. Today it went live. And on its first day the train I watched pass by had two hotboxes.
Also, there maybe another one going in somewhere. From what I could read from across TV highway in Aloha, there is a paper on the door of the bungalow that says shipment 1 of 2. So either they ordered two bungalows and only one gets a detector goodies inside, or perhaps another detector is going in somewhere else.
It is a Southern Technology Corp detector probably using their "Next Generation Defect Detector"
Smart Scan Detector (Link)
-K