We (Vitaly I. Khalturin, Tatyana G. Rautian and Paul G. Richards) prepared this document as an electronic supplement to our paper

A STUDY OF SMALL MAGNITUDE SEISMIC EVENTS DURING 1961 -- 1989 ON AND NEAR THE SEMIPALATINSK TEST SITE, KAZAKHSTAN

published in Pure and Applied Geophysics, volume 158, pages 143--171, 2001. We worked on this paper for about seven years.

Our electronic supplement is in nine parts, with details on:

1. the Semipalatinsk Test Site (STS) boundaries,
   
2. statistics of the Soviet test program (emphasizing underground tests, and STS),
   
3. basic information on all 340 underground nuclear tests at STS,
   
4. ground truth information on the location of shafts and tunnels at the Balapan,
   
5. Degelen, and
   
6. Murzhik subareas of STS,
   
7. the distribution of origin times at STS,
   
8. chemical explosions at STS, and
   
9. a series of 31 kiloton-sized chemical explosions in Uzbekistan.