Construction on railway track.
Location of events unknown - appears to be in urban environment.
Construction along railway track. Workers moving metal frame on flat freight wagon. They start to turn the frame so that its ends stick out from the wagon. There are 2 sets of poles on either side of the tracks, it looks as it this frame may fit between them - a bridge? Shot of men at side of tracks gathered around a metal frame tower, a few men are on the tower - they appear to be fastening it to another piece out of the frame. Good shot of a big train passing.