The vocals can be heard very low in the mix at around 3:27 and it’s a portion of the third verse in “Sweet Thirteen” without the opening and closing line.
[Verse]
The lumbering state I seem to live
Here as it lies
Brings a mist to my eye
Beckon with a frantic hand
The farthest reaches
13 was written by Paul Barker.
13 was produced by Al Jourgensen & Paul Barker.