TY  - RPRT
TI  - Borehole techniques identifying subsurface chimney heights in loose ground-some experiences above underground nuclear explosions
AU  - R. D. Carroll
AU  - J.W. Lacomb
PY  - 1993
DO  - 10.1016/0148-9062(93)91218-8
UR  - https://pubs.usgs.gov/publication/70017902
ID  - 70017902
ER  -