Mystery Object in Photo

Yeah I know that, it's right there after the Sharon Station, 20 miles out from the start, unlike the Ashland one, which is at CP 24.2 (24 miles obviously out into the mainline).

Next one is at Kenyon Interlocking (Warwick, RI) MM 154.2, and then see the above posts for the rest of them till New Haven.

where is the nearest dragging object detector on the NEC from Boston?

The nearest HBD as mentioned is "HAWK" at mile marker 208.7

How about you read prevous posts in their entirety before posting Robert.

The section "just south of RTe 128" is not south, it is west according to timetable. Secondly, I had listed that in my previous post, it is just west of Transfer Interlocking.

Also, if you had read MBTA F40's last question, it was where is the first DED (Dragging Equiptment Detector), not HBD (Hot Box Detector).

And the Ashland DED is at Milepost 24.2, not CP-24